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Understanding Cloud Computing

“This chapter provide an overview of introductory cloud computing topics. It begins with a brief history of cloud computing along with short descriptions of its business and technology drivers. This is followed by definitions of basic concepts and terminology, in addition to explanations of the primary benefits and challenges of cloud computing adoption.”

1 of 37
Mohammed Sajjad Ali 
PMP, CCNP, E-commerce 
Understanding 
Cloud Computing 
Place photo here 
1 
Sartaj Fatima 
Lecturer,
Contents : 
• Introduction 
• History 
• Architecture 
• Key features 
• Service models 
• Deployment models 
• How to work the cloud computing 
• Growth of cloud computing 
• Advantages and disadvantages 
• Conclusion 
Understanding Cloud Computing 
“This chapters provide an overview of introductory cloud computing topics. It begins with a 
brief history of cloud computing along with short descriptions of its business and technology 
drivers. This is followed by definitions of basic concepts and terminology, in addition to 
explanations of the primary benefits and challenges of cloud computing adoption.” 
2
Understanding Cloud Computing 
Introduction 
Cloud computing is a model for enabling convenient on demand network 
access to share a pool of configurable computing resources. 
That can be rapidly provisioned and released with minimal management effort 
or service provider interaction. 
The essential features are service models and deployment models
Understanding Cloud Computing 
What is cloud computing ? 
Use of a network of remote servers which are hosted on the internet in order to 
store, manage & process data rather than using a local server or personal 
computer.
Understanding Cloud Computing
Understanding Cloud Computing

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Understanding Cloud Computing

  • 1. Mohammed Sajjad Ali PMP, CCNP, E-commerce Understanding Cloud Computing Place photo here 1 Sartaj Fatima Lecturer,
  • 2. Contents : • Introduction • History • Architecture • Key features • Service models • Deployment models • How to work the cloud computing • Growth of cloud computing • Advantages and disadvantages • Conclusion Understanding Cloud Computing “This chapters provide an overview of introductory cloud computing topics. It begins with a brief history of cloud computing along with short descriptions of its business and technology drivers. This is followed by definitions of basic concepts and terminology, in addition to explanations of the primary benefits and challenges of cloud computing adoption.” 2
  • 3. Understanding Cloud Computing Introduction Cloud computing is a model for enabling convenient on demand network access to share a pool of configurable computing resources. That can be rapidly provisioned and released with minimal management effort or service provider interaction. The essential features are service models and deployment models
  • 4. Understanding Cloud Computing What is cloud computing ? Use of a network of remote servers which are hosted on the internet in order to store, manage & process data rather than using a local server or personal computer.
  • 7. Understanding Cloud Computing History The concept was born in the 1960s from the ideas of pioneers like J.C.R Licklider The John mcCaurthy form a global net work computation and framing computation as a public utility Flash forward to 1997,when the term “Cloud Computing” was used by first information systems professor Ramnath chellappa Within a just a few years, companies began switching from hardware to cloud services
  • 8. Understanding Cloud Computing Why Cloud- As basic Business Scenarios • Fast Application Deployment. • Hassle Free Maintenance. • Better Resources Utilization. • Platform Independent, Security, Scalability
  • 9. Understanding Cloud Computing Cloud Architecture
  • 10. Understanding Cloud Computing Cloud Architecture
  • 11. Understanding Cloud Computing Key Characteristics •Data stored on the cloud. •Software and services on the cloud-Access via web browsers. •Broad network access. •Accessible from any devices. •Low cost software. •Advances security technologies.
  • 12. Understanding Cloud Computing Cloud Computing Services
  • 13. Understanding Cloud Computing Models of Cloud The most recent achievements are the following models: • Cloud Software as a Service (SaaS) use providers application over a network • Cloud Platform as a Service (PaaS) Deploy customer created application to cloud • Cloud Infrastructure as Service (IaaS) Rent processing, storage network capacity, and other fundamental computing resources. • Cloud Hardware as a Service (HaaS) Reduce cost, less failure and crashes
  • 14. Understanding Cloud Computing Latest Examples  Software as a Service: Salesforce.com Gmail Facebook  Platform as a Service: 3Tera Google application engine Caghead  Infrastructure as a Service: Amazone AWS Joyent Mosso Nirvanix
  • 16. Understanding Cloud Computing Enterprise Level Benefits Achieved From Cloud Computing
  • 17. Understanding Cloud Computing Deployment models The cloud deployment models define the purpose of the cloud and nature of how the cloud is located there are four basic models 1. Private model 2. Public model 3. Community model 4. Hybrid model
  • 18. Understanding Cloud Computing 1. Private cloud  Private cloud or internal cloud are neologisms that some vendors have recently used to describe offerings that emulate cloud computing on private networks. These (typically virtualization automation) products claim to "deliver some benefits of cloud computing without the pitfalls",.
  • 19. Understanding Cloud Computing 2. Public cloud  Public cloud or external cloud describes cloud computing in the traditional mainstream sense, whereby resources are dynamically provisioned on a fine-grained, self-service basis over the Internet, via web applications/web services, from an off-site third-party provider who shares resources and bills on a fine-grained utility computing basis.  A public cloud sells services to anyone on the Internet. (Currently, Amazon Web services is the largest public cloud provider.)
  • 20. Understanding Cloud Computing 3. Community model The cloud infrastructure shared by several organization and supports a specific community that shared concerns.  example : mission , security requirements , policy , and compliance consideration
  • 21. Understanding Cloud Computing 4. Hybrid cloud  A hybrid cloud environment consisting of multiple internal and/or external providers "will be typical for most enterprises". By integrating multiple cloud services users may be able to ease the transition to public cloud services while avoiding issues such as PCI compliance.  Hybrid cloud basically combines both public and private cloud models together.
  • 22. Understanding Cloud Computing How Cloud Computing Works ?
  • 23. Understanding Cloud Computing Cloud Computing Growth Rate
  • 24. Understanding Cloud Computing Advantages  Fast application deployment.  Hassel free maintenance.  Better resource utilization.  Platform independent, security, scalability.  Backup and recovery.  Easy access to information.  Almost unlimited storage
  • 25. Understanding Cloud Computing Disadvantages  Must have stable internet.  Slower than local software.  Concern about reliable and security.  Phone to attack.  Inflexibility
  • 26. Understanding Cloud Computing Why Cloud Computing ?  Business Drivers. I. Capacity Planning II. Organizational Agility III. Cost Reduction  Technology Innovations. I. Clustering II. Grid Computing III. Virtualization
  • 27. Understanding Cloud Computing Virtualization Principles  Server virtualization separates software from hardware.  The low-layer virtualization software abstracts a virtual hardware interface by means of space segmentation, timed division, and emulation to provide the upper-layer OSs with an expected hardware environment.
  • 28. Understanding Cloud Computing Virtualization Implementation VMM virtualizes three types of physical resources: CPU, memory, and I/O device. CPU virtualization is the most important. We will go through: .  CPU virtualization.  Memory virtualization.  I/O device virtualization.
  • 29. Understanding Cloud Computing Technology Innovations vs. Enabling Technologies These are distinguished as cloud-enabling technologies:  Broadband Networks and Internet Architecture.  Data Center Technology.  (Modern) Virtualization Technology.  Web Technology.  Multitenant Technology.  Service Technology.
  • 30. Understanding Cloud Computing Basic Concepts and Terminology
  • 31. Understanding Cloud Computing Cloud A Cloud refers to a distinct IT environment that is designed for the purpose of remotely provisioning scalable and measured IT resources. Figure 1.1 The symbol used to denote the boundary of a cloud environment.
  • 32. Understanding Cloud Computing IT Resource An IT resource is a physical or virtual IT-related artifact that can be either software based, such as a virtual server or a custom software program, or hardware-based, such as a physical server or a network device ( figure 1.2 ) Figure 1.2 Examples of common IT resources and their corresponding symbols
  • 33. Understanding Cloud Computing Figure 1.3 A cloud is hosting eight IT resources three virtual servers, two cloud services, and three storage devices.
  • 34. Understanding Cloud Computing Scaling  Scaling from an IT resource perspective, represents the ability of the IT resource to handle increased or decreased usage demands. The following are types of scaling:  Horizontal Scaling - scaling out and scaling in  Vertical Scaling - scaling up and scaling down
  • 35. Understanding Cloud Computing HS & VS comparison
  • 36. Understanding Cloud Computing Cloud Service  A cloud service is any IT resource that is made remotely accessible via cloud.  Unlike other IT fields that fall under the service technology umbrella - such as service - oriented architecture - the term "service" within the context of cloud computing is especially broad.
  • 37. Hope this is been informative and I would like to thank you for viewing.

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