Cloud computing models provide services via remote servers accessed over the internet rather than local hardware. There are several service models including:
SaaS which provides software applications accessed via web browser;
PaaS which provides platforms for developers to build applications; and
IaaS which provides basic computing and storage infrastructure.
Everything as a service (XaaS) combines these models to offer any IT service via the cloud.
Cp7101 design and management of computer networks-flow analysisDr Geetha Mohan
The document discusses network traffic flows, including defining flows as sets of traffic with common attributes. It describes different types of flows like individual and composite flows. It also covers flow characteristics, identifying flows based on applications and devices, and developing flow models and specifications. Flows can be analyzed and prioritized based on performance needs and other attributes to help design and manage computer networks.
The document discusses cloud computing architectures and services. It describes layered cloud architecture design, including public, private and hybrid clouds. It explains Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides computing infrastructure on-demand. PaaS provides platforms for developers to build applications. SaaS provides software to users on a subscription basis.
CISSP Prep: Ch 9. Software Development SecuritySam Bowne
The document discusses various topics related to software development security including programming concepts, compilers and interpreters, procedural vs object-oriented programming, software development lifecycles, agile development methods, database security, and object-oriented design. It also covers assessing software security through vulnerabilities, maturity models, and testing as well as artificial intelligence techniques.
The document discusses cloud architecture and describes the different layers of cloud computing including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It explains how virtualization allows for the pooling of computing resources and rapid provisioning of these resources. The document also discusses multi-tenancy and how a single software instance can be configured for multiple tenants' needs in a SaaS environment. As an example, it describes how a payroll processing application currently used by multiple government departments could be migrated to a cloud environment for improved maintenance and reduced costs.
Techs R Us provides 24/7 IT monitoring and support services to small and mid-sized businesses. Their services include 24/7 monitoring of clients' IT networks, immediate alerting for any issues, and monthly reporting on network health and security. They also conduct regular asset tracking and inventory to help clients plan budgets and reduce technology costs over the long run.
The use of multi-cloud approaches is on the rise. So is the demand for more sophisticated, multi-cloud management and application deployment services that provide the highly-desired ‘one tool-multiple clouds’ experience.
This document provides an overview of building secure cloud architecture. It discusses cloud characteristics and services models like IaaS, PaaS, and SaaS. It also covers the shared responsibility model between providers and customers. Additional topics include compliance requirements, privacy basics, architecting for availability, network separation, application protection, identity and access management, monitoring tools, log management, and containers security. The document aims to educate readers on best practices for securely designing cloud infrastructure and applications.
Cp7101 design and management of computer networks-flow analysisDr Geetha Mohan
The document discusses network traffic flows, including defining flows as sets of traffic with common attributes. It describes different types of flows like individual and composite flows. It also covers flow characteristics, identifying flows based on applications and devices, and developing flow models and specifications. Flows can be analyzed and prioritized based on performance needs and other attributes to help design and manage computer networks.
The document discusses cloud computing architectures and services. It describes layered cloud architecture design, including public, private and hybrid clouds. It explains Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides computing infrastructure on-demand. PaaS provides platforms for developers to build applications. SaaS provides software to users on a subscription basis.
CISSP Prep: Ch 9. Software Development SecuritySam Bowne
The document discusses various topics related to software development security including programming concepts, compilers and interpreters, procedural vs object-oriented programming, software development lifecycles, agile development methods, database security, and object-oriented design. It also covers assessing software security through vulnerabilities, maturity models, and testing as well as artificial intelligence techniques.
The document discusses cloud architecture and describes the different layers of cloud computing including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It explains how virtualization allows for the pooling of computing resources and rapid provisioning of these resources. The document also discusses multi-tenancy and how a single software instance can be configured for multiple tenants' needs in a SaaS environment. As an example, it describes how a payroll processing application currently used by multiple government departments could be migrated to a cloud environment for improved maintenance and reduced costs.
Techs R Us provides 24/7 IT monitoring and support services to small and mid-sized businesses. Their services include 24/7 monitoring of clients' IT networks, immediate alerting for any issues, and monthly reporting on network health and security. They also conduct regular asset tracking and inventory to help clients plan budgets and reduce technology costs over the long run.
The use of multi-cloud approaches is on the rise. So is the demand for more sophisticated, multi-cloud management and application deployment services that provide the highly-desired ‘one tool-multiple clouds’ experience.
This document provides an overview of building secure cloud architecture. It discusses cloud characteristics and services models like IaaS, PaaS, and SaaS. It also covers the shared responsibility model between providers and customers. Additional topics include compliance requirements, privacy basics, architecting for availability, network separation, application protection, identity and access management, monitoring tools, log management, and containers security. The document aims to educate readers on best practices for securely designing cloud infrastructure and applications.
The document discusses IT solutions and services provided by Expense Reduction Analysts to its clients. It provides strategic IT services including IT governance reviews, strategy development, policy development, procurement of IT solutions and services, and management of solution delivery and suppliers. The company aims to help clients effectively manage IT, reduce costs, comply with best practices, and ensure IT alignment with business strategy and objectives. It is led by Michael Hully and Chris Brown who have extensive experience in directing IT for various organizations.
This document discusses the history and definitions of cloud computing. It begins with various definitions of cloud computing from Wikipedia between 2007-2009 which evolved to emphasize dynamically scalable virtual resources provided over the internet. It then covers common characteristics of cloud computing like multi-tenancy, location independence, pay-per-use pricing and rapid scalability. The rest of the document details cloud computing models including public, private and hybrid clouds. It also outlines the different architectural layers of cloud computing from Software as a Service to Infrastructure as a Service. The document concludes with a discussion of security issues in cloud computing and a case study of security features in Amazon Web Services.
What is Infrastructure as a Service?, Comparison of Service Models, Why do we need IaaS?, Essential Characteristics of IaaS, Where IaaS May Not be the Best Option?, Cloud Deployment Models
https://notebookbft.wordpress.com/
Secure web programming plus end users' awareness are the last line of defense against attacks targeted at the corporate systems, particularly web applications, in the era of world-wide web.
Most web application attacks occur through Cross Site Scripting (XSS), and SQL Injection. On the other hand, most web application vulnerabilities arise from weak coding with failure to properly validate users' input, and failure to properly sanitize output while displaying the data to the visitors.
The literature also confirms the following web application weaknesses in 2010: 26% improper output handling, 22% improper input handling, and 15% insufficient authentication, and others.
Abdul Rahman Sherzad, lecturer at Computer Science Faculty of Herat University, and Ph.D. student at Technical University of Berlin gave a presentation at 12th IT conference on Higher Education for Afghanistan in MoHE, and then conducted a seminar at Hariwa Institute of Higher Education in Herat, Afghanistan introducing web application security threats by demonstrating the security problems that exist in corporate systems with a strong emphasis on secure development. Major security vulnerabilities, secure design and coding best practices when designing and developing web-based applications were covered.
The main objective of the presentation was raising awareness about the problems that might occur in web-application systems, as well as secure coding practices and principles. The presentation's aims were to build security awareness for web applications, to discuss the threat landscape and the controls users should use during the software development lifecycle, to introduce attack methods, to discuss approaches for discovering security vulnerabilities, and finally to discuss the basics of secure web development techniques and principles.
** Cloud Masters Program:https://www.edureka.co/masters-program/cloud-architect-training **
This Edureka "Cloud Computing Service Models” PPT will help you get started with Cloud and different service models like IaaS, PaaS, SaaS in Cloud Computing. Following are the offerings of this Training session:
1. What Is Cloud?
2. What Is Cloud Computing?
3. What are Cloud Services?
4. Cloud Computing Service Models: IaaS, PaaS, SaaS
5. Deployment Models
6. Demo - Cloud Service Models
Check out our Playlists:
AWS: https://goo.gl/8qrfKU
Google Cloud: https://goo.gl/jRc9C4
Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Cloud computing provides on-demand access to shared computing resources like networks, servers, storage, applications and services available over the internet. It has several advantages like lower costs, automatic software updates, unlimited storage and reliability. However, it also has disadvantages like requiring a constant internet connection and potential slowness. The document discusses key concepts of cloud computing including characteristics, service models, virtualization, opportunities and challenges of cloud sourcing, commercial offerings and the future of cloud computing.
Platform as a service (PaaS) provides users a cloud environment to develop, manage, and deliver applications. The PaaS provider supplies underlying infrastructure like servers, storage, networking, and development tools. Users can access PaaS publicly from a provider or privately within their own infrastructure. PaaS handles maintenance and allows developers to focus on building applications without managing infrastructure.
This document discusses design considerations for cloud computing. It covers topics like multi-tenancy approaches, data storage options, security, monitoring, disaster recovery and the roles of DevOps teams. Specifically, it analyzes different multi-tenancy architectures for isolating tenants and applications. It also outlines factors to consider when choosing between relational databases and NoSQL options. Lastly, it discusses disaster recovery objectives and strategies for the cloud.
The document discusses cloud security from the perspective of Wen-Pai Lu, a technical leader at Cisco. It defines cloud security as security products and solutions deployed within cloud computing environments ("in the cloud") or targeted at securing other cloud services ("for the cloud"). It also discusses security services delivered by cloud computing services ("by the cloud"). The document outlines many considerations for cloud security, including infrastructure security, applications and software, physical security, human risks, compliance, disaster recovery, threats, and perspectives from both enterprises and service providers.
This document discusses security issues related to cloud computing. It defines cloud computing and outlines the essential characteristics, service models, and deployment models. It also addresses key security concerns including governance, legal issues, compliance, information lifecycle management, and risks associated with loss of control over data and applications in the cloud. The document emphasizes that security responsibilities are shared between cloud providers and users, and both parties need to understand their roles.
Cloud computing is a new computing paradigm that allows users to access computing resources over the internet on an as-needed basis. It provides scalable resources, software, and data access through web services. Cloud computing offers advantages like reduced costs, increased productivity, and flexibility compared to traditional computing models. However, issues around security, performance, and interoperability need to be addressed for cloud computing to reach its full potential.
This presentation will help you all a lot.
because this is not from a particular text book or a reference guide it is a collection of several web sites.
Cloud computing has several key characteristics that provide benefits to both consumers and providers of cloud services. These characteristics include on-demand access to resources, no upfront commitments, simplified scalability, efficient allocation of resources, and energy efficiency. The essential characteristics of cloud computing that define its nature include on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured services.
This presentation gives a detailed overview about Cloud Computing, its features and challenges faced by it in the market. It gives an insight into cloud security and privacy issues and its measures.
Web Application Firewalls (WAFs) like ModSecurity provide protection for web applications by filtering requests and blocking attacks, with ModSecurity being an open source WAF that uses rules to allow or deny content and protect against vulnerabilities. WAFs can operate in different modes like positive or negative models and be deployed in various configurations including as an appliance, cloud service, or reverse proxy. While effective, WAFs can cause false positives and reduce application performance if not configured properly.
The document provides an introduction to cloud computing, including definitions and concepts. It discusses the evolution of cloud computing from earlier technologies like grid computing and utility computing. It also outlines some key characteristics of cloud computing models including software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS). Additionally, it covers basic cloud architecture, characteristics, purposes and benefits, as well as opportunities and challenges of cloud computing.
This document provides an overview of topics, technologies, programming languages, tools, certifications, and job roles commonly required in the field of cybersecurity. It lists fundamentals areas like computer science, networking, and cryptography. It also outlines essential security domains including web security, ethical hacking, incident response, policies, and human factors. Finally, it provides steps to get started in cybersecurity, including choosing a specialization, developing skills, and staying up to date in the field.
Basics of Virtualization:
What is Virtual and Virtualization?
Why do we need Virtualization?
Benefits of Virtualization.
Before and after Virtualization.
How Virtualization works?
Virtual Machines.
VMware
Types of Virtualization:
1. Server Virtualization
2. Storage virtualization
3. I/O virtualization
4. Network virtualization
5. Client virtualization
6. Desktop virtualization
7. Application Virtualization
This document discusses cloud computing characteristics, service models, deployment models, risks, and security benefits. It defines cloud computing as on-demand access to configurable computing resources over a network. Key characteristics include rapid elasticity, broad network access, resource pooling, measured service, and self-service. Common models are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Risks include vendor lock-in, loss of governance, and isolation failures, but cloud security can also be improved through large-scale implementation.
This document discusses cloud computing, defining it as storing and accessing data and programs over the Internet instead of a computer's hard drive. It describes the types of cloud computing including public, private, hybrid, and community clouds. The advantages of cloud computing are reduced costs, increased storage, flexibility, mobility, and automation. Potential applications include word processing, customized programs, and data storage. The document also outlines some disadvantages like being unable to access the cloud without an Internet connection.
This document discusses different types of cloud services including Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), Database as a Service (DaaS), and Monitoring as a Service. It describes the key characteristics and advantages of each service type. Some potential issues and disadvantages are also outlined such as security concerns, vendor lock-in, and network dependence. Examples of major cloud service providers are provided for each service layer including Google, Amazon, Microsoft, and Salesforce.
This document discusses different cloud computing service models - Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS), and Storage as a Service (STaaS).
It provides details on what each service model provides to customers and examples of major providers for each. Key differences between IaaS, PaaS and SaaS are outlined. Advantages and disadvantages of each service model are summarized. The document also discusses Backup as a Service (BaaS) and its benefits.
The document discusses IT solutions and services provided by Expense Reduction Analysts to its clients. It provides strategic IT services including IT governance reviews, strategy development, policy development, procurement of IT solutions and services, and management of solution delivery and suppliers. The company aims to help clients effectively manage IT, reduce costs, comply with best practices, and ensure IT alignment with business strategy and objectives. It is led by Michael Hully and Chris Brown who have extensive experience in directing IT for various organizations.
This document discusses the history and definitions of cloud computing. It begins with various definitions of cloud computing from Wikipedia between 2007-2009 which evolved to emphasize dynamically scalable virtual resources provided over the internet. It then covers common characteristics of cloud computing like multi-tenancy, location independence, pay-per-use pricing and rapid scalability. The rest of the document details cloud computing models including public, private and hybrid clouds. It also outlines the different architectural layers of cloud computing from Software as a Service to Infrastructure as a Service. The document concludes with a discussion of security issues in cloud computing and a case study of security features in Amazon Web Services.
What is Infrastructure as a Service?, Comparison of Service Models, Why do we need IaaS?, Essential Characteristics of IaaS, Where IaaS May Not be the Best Option?, Cloud Deployment Models
https://notebookbft.wordpress.com/
Secure web programming plus end users' awareness are the last line of defense against attacks targeted at the corporate systems, particularly web applications, in the era of world-wide web.
Most web application attacks occur through Cross Site Scripting (XSS), and SQL Injection. On the other hand, most web application vulnerabilities arise from weak coding with failure to properly validate users' input, and failure to properly sanitize output while displaying the data to the visitors.
The literature also confirms the following web application weaknesses in 2010: 26% improper output handling, 22% improper input handling, and 15% insufficient authentication, and others.
Abdul Rahman Sherzad, lecturer at Computer Science Faculty of Herat University, and Ph.D. student at Technical University of Berlin gave a presentation at 12th IT conference on Higher Education for Afghanistan in MoHE, and then conducted a seminar at Hariwa Institute of Higher Education in Herat, Afghanistan introducing web application security threats by demonstrating the security problems that exist in corporate systems with a strong emphasis on secure development. Major security vulnerabilities, secure design and coding best practices when designing and developing web-based applications were covered.
The main objective of the presentation was raising awareness about the problems that might occur in web-application systems, as well as secure coding practices and principles. The presentation's aims were to build security awareness for web applications, to discuss the threat landscape and the controls users should use during the software development lifecycle, to introduce attack methods, to discuss approaches for discovering security vulnerabilities, and finally to discuss the basics of secure web development techniques and principles.
** Cloud Masters Program:https://www.edureka.co/masters-program/cloud-architect-training **
This Edureka "Cloud Computing Service Models” PPT will help you get started with Cloud and different service models like IaaS, PaaS, SaaS in Cloud Computing. Following are the offerings of this Training session:
1. What Is Cloud?
2. What Is Cloud Computing?
3. What are Cloud Services?
4. Cloud Computing Service Models: IaaS, PaaS, SaaS
5. Deployment Models
6. Demo - Cloud Service Models
Check out our Playlists:
AWS: https://goo.gl/8qrfKU
Google Cloud: https://goo.gl/jRc9C4
Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Cloud computing provides on-demand access to shared computing resources like networks, servers, storage, applications and services available over the internet. It has several advantages like lower costs, automatic software updates, unlimited storage and reliability. However, it also has disadvantages like requiring a constant internet connection and potential slowness. The document discusses key concepts of cloud computing including characteristics, service models, virtualization, opportunities and challenges of cloud sourcing, commercial offerings and the future of cloud computing.
Platform as a service (PaaS) provides users a cloud environment to develop, manage, and deliver applications. The PaaS provider supplies underlying infrastructure like servers, storage, networking, and development tools. Users can access PaaS publicly from a provider or privately within their own infrastructure. PaaS handles maintenance and allows developers to focus on building applications without managing infrastructure.
This document discusses design considerations for cloud computing. It covers topics like multi-tenancy approaches, data storage options, security, monitoring, disaster recovery and the roles of DevOps teams. Specifically, it analyzes different multi-tenancy architectures for isolating tenants and applications. It also outlines factors to consider when choosing between relational databases and NoSQL options. Lastly, it discusses disaster recovery objectives and strategies for the cloud.
The document discusses cloud security from the perspective of Wen-Pai Lu, a technical leader at Cisco. It defines cloud security as security products and solutions deployed within cloud computing environments ("in the cloud") or targeted at securing other cloud services ("for the cloud"). It also discusses security services delivered by cloud computing services ("by the cloud"). The document outlines many considerations for cloud security, including infrastructure security, applications and software, physical security, human risks, compliance, disaster recovery, threats, and perspectives from both enterprises and service providers.
This document discusses security issues related to cloud computing. It defines cloud computing and outlines the essential characteristics, service models, and deployment models. It also addresses key security concerns including governance, legal issues, compliance, information lifecycle management, and risks associated with loss of control over data and applications in the cloud. The document emphasizes that security responsibilities are shared between cloud providers and users, and both parties need to understand their roles.
Cloud computing is a new computing paradigm that allows users to access computing resources over the internet on an as-needed basis. It provides scalable resources, software, and data access through web services. Cloud computing offers advantages like reduced costs, increased productivity, and flexibility compared to traditional computing models. However, issues around security, performance, and interoperability need to be addressed for cloud computing to reach its full potential.
This presentation will help you all a lot.
because this is not from a particular text book or a reference guide it is a collection of several web sites.
Cloud computing has several key characteristics that provide benefits to both consumers and providers of cloud services. These characteristics include on-demand access to resources, no upfront commitments, simplified scalability, efficient allocation of resources, and energy efficiency. The essential characteristics of cloud computing that define its nature include on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured services.
This presentation gives a detailed overview about Cloud Computing, its features and challenges faced by it in the market. It gives an insight into cloud security and privacy issues and its measures.
Web Application Firewalls (WAFs) like ModSecurity provide protection for web applications by filtering requests and blocking attacks, with ModSecurity being an open source WAF that uses rules to allow or deny content and protect against vulnerabilities. WAFs can operate in different modes like positive or negative models and be deployed in various configurations including as an appliance, cloud service, or reverse proxy. While effective, WAFs can cause false positives and reduce application performance if not configured properly.
The document provides an introduction to cloud computing, including definitions and concepts. It discusses the evolution of cloud computing from earlier technologies like grid computing and utility computing. It also outlines some key characteristics of cloud computing models including software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS). Additionally, it covers basic cloud architecture, characteristics, purposes and benefits, as well as opportunities and challenges of cloud computing.
This document provides an overview of topics, technologies, programming languages, tools, certifications, and job roles commonly required in the field of cybersecurity. It lists fundamentals areas like computer science, networking, and cryptography. It also outlines essential security domains including web security, ethical hacking, incident response, policies, and human factors. Finally, it provides steps to get started in cybersecurity, including choosing a specialization, developing skills, and staying up to date in the field.
Basics of Virtualization:
What is Virtual and Virtualization?
Why do we need Virtualization?
Benefits of Virtualization.
Before and after Virtualization.
How Virtualization works?
Virtual Machines.
VMware
Types of Virtualization:
1. Server Virtualization
2. Storage virtualization
3. I/O virtualization
4. Network virtualization
5. Client virtualization
6. Desktop virtualization
7. Application Virtualization
This document discusses cloud computing characteristics, service models, deployment models, risks, and security benefits. It defines cloud computing as on-demand access to configurable computing resources over a network. Key characteristics include rapid elasticity, broad network access, resource pooling, measured service, and self-service. Common models are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Risks include vendor lock-in, loss of governance, and isolation failures, but cloud security can also be improved through large-scale implementation.
This document discusses cloud computing, defining it as storing and accessing data and programs over the Internet instead of a computer's hard drive. It describes the types of cloud computing including public, private, hybrid, and community clouds. The advantages of cloud computing are reduced costs, increased storage, flexibility, mobility, and automation. Potential applications include word processing, customized programs, and data storage. The document also outlines some disadvantages like being unable to access the cloud without an Internet connection.
This document discusses different types of cloud services including Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), Database as a Service (DaaS), and Monitoring as a Service. It describes the key characteristics and advantages of each service type. Some potential issues and disadvantages are also outlined such as security concerns, vendor lock-in, and network dependence. Examples of major cloud service providers are provided for each service layer including Google, Amazon, Microsoft, and Salesforce.
This document discusses different cloud computing service models - Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS), and Storage as a Service (STaaS).
It provides details on what each service model provides to customers and examples of major providers for each. Key differences between IaaS, PaaS and SaaS are outlined. Advantages and disadvantages of each service model are summarized. The document also discusses Backup as a Service (BaaS) and its benefits.
Software as a Service (SaaS), Infrastructure as a Service (IaaS), and Platform as a Service (PaaS) are the three service models of cloud computing, each built to address specific business requirements.
Different Cloud Computing Services Used At FibonalabsFibonalabs
Cloud computing is not just the present but also the future of the world of technology. We at Fibonalabs believe in staying ahead of our game and providing cloud computing services is one of our areas of expertise. Using the latest cloud technologies, we develop mobile and web applications that are user-friendly, appealing, and excellent in terms of functionality.
• Software as a service is a method for delivering software applications over the Internet, on demand and typically on a subscription basis. With SaaS, cloud providers host and manage the software application and underlying infrastructure, and handle any maintenance, like software upgrades and security patching. Users connect to the application over the Internet, usually with a web browser on their phone, tablet, or PC.
The document discusses Software as a Service (SaaS) and key considerations for SaaS application development. SaaS provides remote access to software via the web on a pay-as-you-go basis, alleviating maintenance burdens but limiting user control. Good SaaS design emphasizes scalability, multi-tenancy via customization without code changes, and configurability. The document examines Salesforce as a leading SaaS provider and discusses advantages like easy use and scalability versus disadvantages like privacy and reliability concerns for SaaS applications.
Cloud computing provides on-demand access to shared pools of configurable computing resources like networks, servers, storage, applications and services that can be provisioned quickly with minimal management effort. There are three main cloud service models: Infrastructure as a Service (IaaS) which provides basic storage and computing capabilities; Platform as a Service (PaaS) which provides a development environment; and Software as a Service (SaaS) which provides applications to users. Cloud computing offers advantages like flexibility, mobility, collaboration and cost efficiency but also poses security, privacy and control risks that need to be addressed.
SaaS (Software as a Service) is a cloud computing model where software applications are hosted by a third party and made available to customers over the Internet. With SaaS, customers do not install or maintain software themselves but instead access it through a web browser. Key characteristics of SaaS include multi-tenant architecture that allows data and application sharing, easy customization capabilities for individual customers without affecting common infrastructure, and improved access to software from any device with an Internet connection. SaaS is also highly scalable, provides regular automated updates, and offers flexible pay-as-you-go pricing models. It is one of the most common delivery methods for business applications today.
What are cloud service models, advantage of IAAS, advantages of PAAS, advantage of SAAS, What are cloud service models, What is IAAS, What is PAAS, what is SAAS
People frequently use the terms IaaS, PaaS, FaaS, and SaaS interchangeably when discussing cloud computing service because all of these technologies operate behind the cloud.
Comprehensive Information on Software as a ServiceHTS Hosting
Software as a service (SaaS) is a delivery model of cloud computing that is used by many business applications. It entails licensing software, which is centrally hosted, on a subscription basis.
Cloud computing allows users to access applications hosted on remote servers rather than local devices. This reduces costs for the user as the cloud provider handles hardware, software updates, and maintenance. Users pay based on usage rather than large upfront license fees. However, there are also security and connectivity issues to consider if relying on cloud applications and data centers. Overall cloud computing provides scalability, simplicity and knowledgeable vendors but also security concerns that must be addressed.
Cloud computing allows companies to access applications and store data remotely via the internet instead of locally. It provides scalable IT resources on demand that can be accessed from anywhere. Some key benefits include reduced costs, increased flexibility and collaboration capabilities. However, security and privacy concerns remain top issues that need to be addressed. Control testing and governance models are important to effectively mitigate risks when using cloud services. Case studies of companies like Salesforce.com and GSK demonstrate how cloud can drive innovation while reducing IT costs through the subscription-based model.
This document summarizes key points from a lecture on virtualization and cloud computing:
1. Nearly everyone uses cloud services directly or indirectly through applications like GitHub. Companies are moving more business operations to cloud services and platforms.
2. Cloud services provide on-demand, scalable resources that users pay for based on usage. Key cloud service models are SaaS, PaaS, and IaaS.
3. SaaS delivers software through subscriptions. PaaS provides development tools and platforms in the cloud. IaaS offers virtual infrastructure like servers, storage, and networks on demand.
DIFFERENCE BETWEEN SaaS, PaaS & Iaas (Presentation).pdfChinmayee Behera
Client convenience for online enterprises depends on the cloud. This necessitates gathering, analysing, and storing a sizable quantity of data before delivering it to the end user. Web applications that are cloud-based can be used in this situation. The following three models come to mind while discussing cloud services: SaaS (software as a service) PaaS (Platform as a Service) IaaS (Infrastructure as a Service) To assist you gain a better understanding of how cloud-based services might help you expand your organisation, this article will thoroughly compare IaaS, PaaS, and SaaS. Lets find the difference between saas paas iaas
What is Cloud Computing?
The current alternative to using a hard disc to retrieve data and information is cloud computing. Compared to conventional storage solutions, the cloud server is quicker, safer, more cheap, and more effective.
Cloud computing is being used by everyone in a variety of industries. Since it allows developing and established firms to scale at any moment, it is especially a lifesaver for them.
With the cloud, you can access your data from almost anywhere without being reliant on technology. You always have access to your data because it is stored online.
Thanks to cloud computing, businesses can easily grow without having to invest in expensive gear. Instead, they can just pay for more space.
Types:
The differences between infrastructure as a service, platform as a service, and software as a service are briefly explained here.
IaaS (Infrastructure as a Service):
Gives the foundational elements for cloud infrastructure
Dispenses with computer tools
As-you-go billing
PaaS (Platform as a Service):
Internet-based tools are made available to users by an outside source.
On their own infrastructure, the third parties provide their tools and services.
SaaS (Software as a Service):
Gives online users access to a web application
A pay-per-use business model.
1.Infrastructure as a Service(IaaS)
Infrastructure as a Service supplies its users with computer resources including processing power, virtual machines, networking, and more, as well as the essential building blocks for cloud architecture.
IaaS assists small enterprises and other organisations looking for a low-cost cloud solution to support their operations. The pay-as-you-go concept ensures that a user only pays for the services they really utilise, eliminating any additional fees. Users have a choice of three deployment models: public, private, or hybrid.
This presentation provides a detailed coverage on Cloud services: Software as a Service, Platform as a Service, Infrastructure as a Service, Database as a Service, Monitoring as a Service, Communication as Services. Service providers- Google, Amazon, Microsoft Azure, IBM, Sales force.
Though service-oriented architecture advocates "everything as a service" (with the acronyms EaaS or XaaS,[62] or simply aas), cloud-computing providers offer their "services" according to different models, of which the three standard models per NIST are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).[61] These models offer increasing abstraction; they are thus often portrayed as a layers in a stack: infrastructure-, platform- and software-as-a-service, but these need not be related.
Cloud Computing for college presenation project.Mahesh Tibrewal
This presentation I've made on Cloud computing can be used by students for their college projects. I've tried to make this as colourful and attractive as possible without losing the relevance with the topic.
Platform as a Service (PaaS) provides developers with tools and services to build, test, and deploy web applications without having to manage the underlying infrastructure. PaaS providers deliver the hardware and software tools (such as databases, web servers, programming languages) required to support the full life cycle of building and delivering a web application. Some examples of popular PaaS providers include Google App Engine, Azure, and Force.com. PaaS offers advantages like simplified development, lower costs by avoiding upfront infrastructure investments, and automatic scalability of applications.
This document provides an overview of platform as a service (PaaS). It discusses that PaaS allows developers to develop and deploy applications online using the services provided by PaaS providers, such as programming languages, databases, and other tools. It outlines the key characteristics of PaaS including that it provides an all-in-one development platform with built-in scalability that allows for collaborative work. The document also discusses the benefits of PaaS, such as quick development and deployment and reduced costs, as well as drawbacks like vendor lock-in and security issues.
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Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
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On-device app controlling AI.
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A Study of Variable-Role-based Feature Enrichment in Neural Models of Code
Cloud Service Models.pdf
1. Cloud Services Models
Cloud Computing can be defined as the practice of using a network of remote servers
hosted on the Internet to store, manage, and process data, rather than a local server
or a personal computer. Companies offering such kinds of cloud computing services
are called cloud providers and typically charge for cloud computing services based on
usage. Grids and clusters are the foundations for cloud computing.
Types of Cloud Computing
Most cloud computing services fall into five broad categories:
1. Software as a service (SaaS)
2. Platform as a service (PaaS)
3. Infrastructure as a service (IaaS)
4. Containers as a Service (CaaS)
5. Monitoring as-a-Service (MaaS)
6. Anything/Everything as a service (XaaS)
7. Function as a Service (FaaS)
1. Software as a Service(SaaS)
Software-as-a-Service (SaaS) is a way of delivering services and applications over the
Internet. Instead of installing and maintaining software, we simply access it via the
Internet, freeing ourselves from the complex software and hardware management. It
removes the need to install and run applications on our own computers or in the data
centers eliminating the expenses of hardware as well as software maintenance.
SaaS provides a complete software solution that you purchase on a pay-as-you-
go basis from a cloud service provider. Most SaaS applications can be run directly
from a web browser without any downloads or installations required. The SaaS
applications are sometimes called Web-based software, on-demand software, or
hosted software.
2. Advantages of SaaS
1. Cost-Effective: Pay only for what you use.
2. Reduced time: Users can run most SaaS apps directly from their web browser
without needing to download and install any software. This reduces the time spent
in installation and configuration and can reduce the issues that can get in the way
of the software deployment.
3. Accessibility: We can Access app data from anywhere.
4. Automatic updates: Rather than purchasing new software, customers rely on a
SaaS provider to automatically perform the updates.
5. Scalability: It allows the users to access the services and features on-demand.
Disadvantages of Saas :
1. Limited customization: SaaS solutions are typically not as customizable as on-
premises software, meaning that users may have to work within the constraints of
the SaaS provider’s platform and may not be able to tailor the software to their
specific needs.
2. Dependence on internet connectivity: SaaS solutions are typically cloud-based,
which means that they require a stable internet connection to function properly.
This can be problematic for users in areas with poor connectivity or for those who
need to access the software in offline environments.
3. Security concerns: SaaS providers are responsible for maintaining the security of
the data stored on their servers, but there is still a risk of data breaches or other
security incidents.
4. Limited control over data: SaaS providers may have access to a user’s data,
which can be a concern for organizations that need to maintain strict control over
their data for regulatory or other reasons.
Benefits of Software-as-a-Service (SaaS)
1. Cost Effective: SaaS offers monthly or annual subscriptions, so it is easy to buy
for an organization because its cost is less as compared to licensed applications.
2. One to Many: SaaS is based on a shared data model, so a single instance of the
application is accessible by multiple customers at the same time.
3. Accessibility and Multidevice support: SaaS applications can be accessed
globally from a remote location also, and these applications are device
independent; we can easily access them by mobile, laptop, tablet, desktop, etc.
4. No Client-Side Installation: The SaaS services are accessible directly via an
internet connection, so the organization doesn’t require any in-house software or
hardware installation.
5. Platform responsibilities managed by service providers: All the backups,
storage, power management, security, maintenance, and installation are managed
by the service provider, and users don’t have to bother about it.
3. Disadvantages of Software-as-a-Service (SaaS)
1. Network Dependent: All the services are accessible only via good internet
connectivity, so there should be good internet connectivity for accessing the
application on both sides.
2. Security: Since all applications are present in a cloud environment and security
feature is managed by the cloud provider, and security is a major reason. In-house
deployment is more secure than the cloud environment if anyone wants to work on
confidential data.
3. Latency Issue: The data and applications are stored at a variable distance, so
there may be greater latency while interacting with applications. This type of SaaS
model is not recommended if we require response time in milliseconds.
4. Vendor lock-in: Once the customer takes services from one service provider, they
cannot switch to another vendor. It is time-consuming and expensive for the client
working on a large application.
i. SaaS
SaaS stands for Software as a Service, provides a facility to the user to use the
software from anywhere with the help of an internet connection. It is also known
as software on demand. The remote access is possible because of service
providers, host applications and their associated data at their location.
There are various benefits of the SaaS as it is economical and only the user has to
pay for some of the basic costs such as licensing fees, installation costs,
maintenance fees, and support fees. Some of the examples of SaaS are Yahoo!
Mail, Hotmail, and Gmail.
Software as a Service (SaaS)
SaaS (also known as cloud application services) mostly runs directly through the web
browser without downloading and installing these applications.
Example: Dropbox, Google Apps, Slack, Hubspot, Salesforce, Cisco WebEx, etc.
2. Platform as a Service
PaaS is a category of cloud computing that provides a platform and environment to
allow developers to build applications and services over the internet. PaaS services
4. are hosted in the cloud and accessed by users simply via their web browser.
A PaaS provider hosts the hardware and software on its own infrastructure. As a
result, PaaS frees users from having to install in-house hardware and software to
develop or run a new application. Thus, the development and deployment of the
application take place independent of the hardware.
The consumer does not manage or control the underlying cloud infrastructure
including network, servers, operating systems, or storage, but has control over the
deployed applications and possibly configuration settings for the application-hosting
environment. To make it simple, take the example of an annual day function, you will
have two options either to create a venue or to rent a venue but the function is the
same.
Advantages of PaaS:
1. Simple and convenient for users: It provides much of the infrastructure and other
IT services, which users can access anywhere via a web browser.
2. Cost-Effective: It charges for the services provided on a per-use basis thus
eliminating the expenses one may have for on-premises hardware and software.
3. Efficiently managing the lifecycle: It is designed to support the complete web
application lifecycle: building, testing, deploying, managing, and updating.
4. Efficiency: It allows for higher-level programming with reduced complexity thus,
the overall development of the application can be more effective.
The various companies providing Platform as a service are Amazon Web services
Elastic Beanstalk, Salesforce, Windows Azure, Google App Engine, cloud Bees and
IBM smart cloud.
Disadvantages of Paas:
1. Limited control over infrastructure: PaaS providers typically manage the
underlying infrastructure and take care of maintenance and updates, but this can
also mean that users have less control over the environment and may not be able
to make certain customizations.
2. Dependence on the provider: Users are dependent on the PaaS provider for the
availability, scalability, and reliability of the platform, which can be a risk if the
provider experiences outages or other issues.
3. Limited flexibility: PaaS solutions may not be able to accommodate certain types
of workloads or applications, which can limit the value of the solution for certain
organizations.
5. Benefits of Platform-as-a-Service (PaaS)
1. Simplified Development: PaaS infrastructure is managed by the service provider
so the developer can focus development and innovation part rather than the
infrastructure management.
2. Support Geographically Distributed Development Teams: The development
environment is present on the internet, so the development team can easily access
the projects if they are working from remote locations.
3. Freedom to Experiment: PaaS allows testing and trying new operation systems,
languages and tools without extra investment or infrastructure.
4. Scalability: The resources can be easily scaled up and down as per the
requirement.
5. Wide Variety of Resources: PaaS offers a wide variety of IT resources for the
developers, such as operating systems, middleware, development tools, database,
etc.
Disadvantages of Platform-as-a-Service (PaaS)
1. Vendor Lock-in: Once customers take services from one service provider, they
cannot switch to another. Migrating the application from one service provider to
another service provider may create a problem.
2. Vendor Dependency: If the current service provider makes any small changes in
the configuration of infrastructure, it may affect the performance of the running
application. Additionally, the application will be more costly if the service provider
increases the pricing model.
ii. PaaS
PaaS stands for Platform as a Service. This helps the user by providing the facility to make,
publish, and customize the software in the hosted environment. An internet connection helps
to do it. It also has several benefits such as it has lower costs and only the user has to pay for
the essential things.
The host of a PaaS has the hardware and software of its own. This frees the user from installing
the hardware and software to execute a new application.
Platform as a Service (PaaS)
PaaS (also known as cloud platform services) is similar to SaaS, but it provides a
platform for software creation.
Example: Windows Azure, Magento Commerce Cloud, Force.com, OpenShift, etc.
6. PaaS is a platform for programming developers and brings benefits - SaaS is used for
but from the software development point. It is the computer platform that provides the
facility to use web applications quickly. With ease, without buying & maintaining web-
development, PaaS has a similarity with that SaaS except that SaaS delivers software
over the web. In contrast, PaaS provides a platform for the creating of software
delivered over the web. PaaS has a feature of a point-and-click tool that allows non-
programmers to develop web applications. App-Engine of Google & Force.com,
Windows Azure, AppFog, Openshift, and VMware Cloud Foundry are PaaS examples.
Advantages of PaaS:
Scalability: of users ranges from hundreds to thousands.
Prebuilt Business Plan: PaaS vendors provide pre-defined business functionality
for users to directly start the project.
Low Cost: Development via PaaS requires a computer & a good internet
connection and less investment in hardware & software.
Instant Community: PaaS providers facilitates user providing online communities
where a developer can get new ideas & share their experience & advice.
Simple & easy to use
Disadvantages of PaaS are as follows:
7. Vendor Migration: Migration from one PaaS vendors' application to another PaaS
vendor will create some problem.
Data-Privacy: The privacy of data can get hamper if it is not held within the
company's boundary or organization.
Mix-up Complexity: Some of the applications developed may be local while
others are from the cloud, which may increase the complexity.
3. Infrastructure as a Service
Infrastructure as a service (IaaS) is a service model that delivers computer
infrastructure on an outsourced basis to support various operations. Typically
IaaS is a service where infrastructure is provided as outsourcing to enterprises
such as networking equipment, devices, database, and web servers.
It is also known as Hardware as a Service (HaaS). IaaS customers pay on a
per-user basis, typically by the hour, week, or month. Some providers also
charge customers based on the amount of virtual machine space they use.
It simply provides the underlying operating systems, security, networking, and
servers for developing such applications, and services, and deploying
development tools, databases, etc.
Advantages of IaaS:
1. Cost-Effective: Eliminates capital expense and reduces ongoing cost and IaaS
customers pay on a per-user basis, typically by the hour, week, or month.
2. Website hosting: Running websites using IaaS can be less expensive than
traditional web hosting.
3. Security: The IaaS Cloud Provider may provide better security than your existing
software.
4. Maintenance: There is no need to manage the underlying data center or the
introduction of new releases of the development or underlying software. This is all
handled by the IaaS Cloud Provider.
The various companies providing Infrastructure as a service are Amazon web
services, Bluestack, IBM, Openstack, Rackspace, and Vmware.
Disadvantages of laaS :
8. 1. Limited control over infrastructure: IaaS providers typically manage the
underlying infrastructure and take care of maintenance and updates, but this can
also mean that users have less control over the environment and may not be able
to make certain customizations.
2. Security concerns: Users are responsible for securing their own data and
applications, which can be a significant undertaking.
3. Limited access: Cloud computing may not be accessible in certain regions and
countries due to legal policies.
Benefits of Infrastructure-as-a-Service (IaaS)
1. Pay-as-you-Go: IaaS does not require upfront fees. The user needs to
pay only for what they have used.
2. Scalability: Customers can quickly scale up and down the resources
per their requirements.
3. Continuity and Disaster Recovery: The data are replicated and stored
in a different locations, so accessing the application and data during
disasters and outages is easy.
4. Core Focus: The Infrastructure-as-a-Service (IaaS) focuses on core
business instead of IT infrastructure and computing resources.
Disadvantages of Infrastructure-as-a-Service (IaaS)
1. Security: In an IaaS environment, security is a big issue. Many
providers are not able to provide highly secure infrastructure.
2. Interoperability Issues: Customers cannot migrate Virtual Machines
from one service provider to another,r so they may face provider lock-in
issues.
3. Data Erase Practice: The customer uses a virtual machine, a shared
disk resource provided by the service provider. Once the customer
leaves the resource, the cloud provider should ensure to erase all the
data from that resource before assigning that resource to another
customer, so that customer may not get any data residue from the
previous client.
iii. IaaS
IaaS stands for Infrastructure as a Service. With the help of IAAS, the user can use IT hardware
and software just by paying the basic price of it. The companies that use IaaS are IBM, Google,
and Amazon.
9. With the help of visualization, the host can manage and create the infrastructure resources at
the cloud. For small start-ups and firms, the IaaS has the major advantage as it benefits them
with the infrastructure rather than spending a large amount of money on hardware and
infrastructure.
The reason for choosing IaaS is that it is easier, faster, and cost-efficient which reduces the
burden of the organizations.
Infrastructure as a Service (IaaS)
IaaS (also known as cloud infrastructure services) manages applications’ data, runtime
environments, and middleware.
Example: Google Compute Engine (GCE), AWS EC2, Cisco Metapod, etc.
IaaS, as the name suggests, is a way of providing Cloud computing infrastructure such
as virtual machines, storage drives, servers, operating systems & networks, which is also
an on-demand service like that of SaaS. Rather than purchasing servers or developing
software, clients buy those resources as a fully outsourced service based on their
requirements. "Public cloud" is considered as an infrastructure that consists of shared
resources, based on a self-service over the Internet. In a word, it is the only layer of the
cloud where the customer gets the platform for their organization to outsource IT
infrastructure on a pay-per-use basis.
IaaS provides users with:
Load balancers
Disk storage via virtual machines
Software Packages
IP address
VLANs
Advantages of IaaS are:
Dynamic: Users can dynamically opt & configure devices such as CPU, storage
drive, etc.
Easy Access: Users can easily access the vast cloud computing power.
Renting: Flexible and efficient while renting IT infrastructures.
10. Full control of computer resources along with portability.
Disadvantages of IaaS are as follows:
Internet connection is a must.
IaaS depends on virtualization services.
This service restricts user-privacy & customization.
4. Anything as a Service
It is also known as Everything as a Service. Most of the cloud service providers
nowadays offer anything as a service that is a compilation of all of the above services
including some additional services.
Advantages of XaaS:
1. Scalability: XaaS solutions can be easily scaled up or down to meet the changing
needs of an organization.
2. Flexibility: XaaS solutions can be used to provide a wide range of services, such
as storage, databases, networking, and software, which can be customized to
meet the specific needs of an organization.
3. Cost-effectiveness: XaaS solutions can be more cost-effective than traditional on-
premises solutions, as organizations only pay for the services.
Disadvantages of XaaS:
1. Dependence on the provider: Users are dependent on the XaaS provider for the
availability, scalability, and reliability of the service, which can be a risk if the
provider experiences outages or other issues.
2. Limited flexibility: XaaS solutions may not be able to accommodate certain types
of workloads or applications, which can limit the value of the solution for certain
organizations.
3. Limited integration: XaaS solutions may not be able to integrate with existing
systems and data sources, which can limit the value of the solution for certain
organizations.
5. Function as a Service :
FaaS is a type of cloud computing service. It provides a platform for its users or
customers to develop, compute, run and deploy the code or entire application as
functions. It allows the user to entirely develop the code and update it at any time
11. without worrying about the maintenance of the underlying infrastructure. The
developed code can be executed with response to the specific event. It is also as
same as PaaS.
FaaS is an event-driven execution model. It is implemented in the serverless
container. When the application is developed completely, the user will now trigger the
event to execute the code. Now, the triggered event makes response and activates
the servers to execute it. The servers are nothing but the Linux servers or any other
servers which is managed by the vendor completely. Customer does not have clue
about any servers which is why they do not need to maintain the server hence it
is serverless architecture.
Both PaaS and FaaS are providing the same functionality but there is still some
differentiation in terms of Scalability and Cost. FaaS, provides auto-scaling up and
scaling down depending upon the demand. PaaS also provides scalability but here
users have to configure the scaling parameter depending upon the demand.
In FaaS, users only have to pay for the number of execution time happened. In PaaS,
users have to pay for the amount based on pay-as-you-go price regardless of how
much or less they use.
Advantages of FaaS :
Highly Scalable: Auto scaling is done by the provider depending upon the
demand.
Cost-Effective: Pay only for the number of events executed.
Code Simplification: FaaS allows the users to upload the entire application all at
once. It allows you to write code for independent functions or similar to those
functions.
Maintenance of code is enough and no need to worry about the servers.
Functions can be written in any programming language.
Less control over the system.
The various companies providing Function as a Service are Amazon Web Services –
Firecracker, Google – Kubernetes, Oracle – Fn, Apache OpenWhisk – IBM,
OpenFaaS, etc
12. Disadvantages of FaaS :
1. Cold start latency: Since FaaS functions are event-triggered, the first request to a
new function may experience increased latency as the function container is created
and initialized.
2. Limited control over infrastructure: FaaS providers typically manage the
underlying infrastructure and take care of maintenance and updates, but this can
also mean that users have less control over the environment and may not be able
to make certain customizations.
3. Security concerns: Users are responsible for securing their own data and
applications, which can be a significant undertaking.
4. Limited scalability: FaaS functions may not be able to handle high traffic or large
number of requests.
13. Most cloud computing services fall into five broad models:-
● Software as a service (SaaS)
● Platform as a service (PaaS)
● Infrastructure as a service (IaaS)
● Anything/Everything as a service (XaaS)
● Function as a Service (FaaS)
Software As A Service(SaaS):-
● Software-as-a-Service (SaaS) is a way of delivering services
and applications over the Internet.
● Instead of installing and maintaining software, we simply
access it via the Internet, freeing ourselves from the complex
software and hardware management.
● It removes the need to install and run applications on our
own computers or in the data centers eliminating the
expenses of hardware as well as software maintenance.
● SaaS provides a complete software solution that you
purchase on a pay-as-you-go basis from a cloud service
provider.
14. ● Most SaaS applications can be run directly from a web
browser without any downloads or installations required.
● The SaaS applications are sometimes called Web-based
software, on-demand software, or hosted software.
● The various companies providing Software as a service are
Cloud9 Analytics, Salesforce.com, Cloud Switch, Microsoft
Office 365, Big Commerce, Eloqua, dropBox, and Cloud
Tran.
●
Advantages of SaaS
Cost-Effective: Pay only for what you use.
Reduced time: Users can run most SaaS apps directly from their
web browser without needing to download and install any
software. This reduces the time spent in installation and
configuration and can reduce the issues that can get in the way of
the software deployment.
Accessibility: We can Access app data from anywhere.
Automatic updates: Rather than purchasing new software,
customers rely on a SaaS provider to automatically perform the
updates.
15. Scalability: It allows the users to access the services and
features on-demand.
Disadvantages of Saas :
Limited customization: SaaS solutions are typically not as
customizable as on-premises software, meaning that users may
have to work within the constraints of the SaaS provider’s
platform and may not be able to tailor the software to their specific
needs.
Dependence on internet connectivity: SaaS solutions are
typically cloud-based, which means that they require a stable
internet connection to function properly. This can be problematic
for users in areas with poor connectivity or for those who need to
access the software in offline environments.
Security concerns: SaaS providers are responsible for
maintaining the security of the data stored on their servers, but
there is still a risk of data breaches or other security incidents.
Limited control over data: SaaS providers may have access to
a user’s data, which can be a concern for organizations that need
to maintain strict control over their data for regulatory or other
reasons.
Platform as a Service
● PaaS is a category of cloud computing that provides a
platform and environment to allow developers to build
applications and services over the internet.
● PaaS services are hosted in the cloud and accessed by
users simply via their web browser.
● A PaaS provider hosts the hardware and software on its own
infrastructure.
16. ● As a result, PaaS frees users from having to install in-house
hardware and software to develop or run a new application.
● Thus, the development and deployment of the application
take place independent of the hardware.
● The consumer does not manage or control the underlying
cloud infrastructure including network, servers, operating
systems, or storage, but has control over the deployed
applications and possibly configuration settings for the
application-hosting environment.
● To make it simple, take the example of an annual day
function, you will have two options either to create a venue
or to rent a venue but the function is the same.
● The various companies providing Platform as a service are
Amazon Web services Elastic Beanstalk, Salesforce,
Windows Azure, Google App Engine, cloud Bees and IBM
smart cloud.
Advantages of PaaS:
17. Simple and convenient for users: It provides much of the
infrastructure and other IT services, which users can access
anywhere via a web browser.
Cost-Effective: It charges for the services provided on a per-use
basis thus eliminating the expenses one may have for on-
premises hardware and software.
Efficiently managing the lifecycle: It is designed to support the
complete web application lifecycle: building, testing, deploying,
managing, and updating.
Efficiency: It allows for higher-level programming with reduced
complexity thus, the overall development of the application can be
more effective.
Disadvantages of Paas:
Limited control over infrastructure: PaaS providers typically
manage the underlying infrastructure and take care of
maintenance and updates, but this can also mean that users have
less control over the environment and may not be able to make
certain customizations.
Dependence on the provider: Users are dependent on the PaaS
provider for the availability, scalability, and reliability of the
platform, which can be a risk if the provider experiences outages
or other issues.
Limited flexibility: PaaS solutions may not be able to
accommodate certain types of workloads or applications, which
can limit the value of the solution for certain organizations.
18. Infrastructure as a Service
● Infrastructure as a service (IaaS) is a service model that
delivers computer infrastructure on an outsourced basis to
support various operations.
● Typically IaaS is a service where infrastructure is provided
as outsourcing to enterprises such as networking equipment,
devices, database, and web servers.
● It is also known as Hardware as a Service (HaaS). IaaS
customers pay on a per-user basis, typically by the hour,
week, or month.
● Some providers also charge customers based on the
amount of virtual machine space they use.
● It simply provides the underlying operating systems, security,
networking, and servers for developing such applications,
and services, and deploying development tools, databases,
etc.
● The various companies providing Infrastructure as a service
are Amazon web services, Bluestack, IBM, Openstack,
Rackspace, and Vmware
19. Advantages of IaaS:
Cost-Effective: Eliminates capital expense and reduces ongoing
cost and IaaS customers pay on a per-user basis, typically by the
hour, week, or month.
Website hosting: Running websites using IaaS can be less
expensive than traditional web hosting.
Security: The IaaS Cloud Provider may provide better security
than your existing software.
Maintenance: There is no need to manage the underlying data
center or the introduction of new releases of the development or
underlying software. This is all handled by the IaaS Cloud
Provider.
Disadvantages of laaS :
Limited control over infrastructure: IaaS providers typically
manage the underlying infrastructure and take care of
maintenance and updates, but this can also mean that users have
less control over the environment and may not be able to make
certain customizations.
Security concerns: Users are responsible for securing their own
data and applications, which can be a significant undertaking.
20. Limited access: Cloud computing may not be accessible in
certain regions and countries due to legal policies.
Anything as a Service
It is also known as Everything as a Service. Most of the cloud
service providers nowadays offer anything as a service that is a
compilation of all of the above services including some additional
services.
Advantages of XaaS:
Scalability: XaaS solutions can be easily scaled up or down to
meet the changing needs of an organization.
Flexibility: XaaS solutions can be used to provide a wide range
of services, such as storage, databases, networking, and
software, which can be customized to meet the specific needs of
an organization.
Cost-effectiveness: XaaS solutions can be more cost-effective
than traditional on-premises solutions, as organizations only pay
for the services.
Disadvantages of XaaS:
Dependence on the provider: Users are dependent on the XaaS
provider for the availability, scalability, and reliability of the
service, which can be a risk if the provider experiences outages or
other issues.
Limited flexibility: XaaS solutions may not be able to
accommodate certain types of workloads or applications, which
can limit the value of the solution for certain organizations.
21. Limited integration: XaaS solutions may not be able to integrate
with existing systems and data sources, which can limit the value
of the solution for certain organizations.
Function as a Service :
● FaaS is a type of cloud computing service.
● It provides a platform for its users or customers to develop,
compute, run and deploy the code or entire application as
functions.
● It allows the user to entirely develop the code and update it
at any time without worrying about the maintenance of the
underlying infrastructure.
● The developed code can be executed with response to the
specific event. It is also as same as PaaS.
● FaaS is an event-driven execution model. It is implemented
in the serverless container.
● The various companies providing Function as a Service are
Amazon Web Services – Firecracker, Google – Kubernetes,
Oracle – Fn, Apache OpenWhisk – IBM, OpenFaaS,
Advantages of FaaS :
● Highly Scalable: Auto scaling is done by the provider
depending upon the demand.
● Cost-Effective: Pay only for the number of events
executed.
● Code Simplification: FaaS allows the users to upload
the entire application all at once. It allows you to write
code for independent functions or similar to those
functions.
22. ● Maintenance of code is enough and no need to worry
about the servers.
● Functions can be written in any programming
language..
Disadvantages of FaaS :
Cold start latency: Since FaaS functions are event-triggered, the
first request to a new function may experience increased latency
as the function container is created and initialized.
Limited control over infrastructure: FaaS providers typically
manage the underlying infrastructure and take care of
maintenance and updates, but this can also mean that users have
less control over the environment and may not be able to make
certain customizations.
Security concerns: Users are responsible for securing their own
data and applications, which can be a significant undertaking.
Limited scalability: FaaS functions may not be able to handle
high traffic or large number of request