Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g. networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. Key characteristics include on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service. Cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g. storage, processing, bandwidth, and active user accounts).

1. Soumil shah - 36
Toshan dandi - 37
Udit shah - 38
Vansh parekh - 39
Vansh sonaiya - 40
Yash Gandhi - 41
Yash karnani - 42

2. WHAT IS CLOUD COMPUTING?
• Cloud Computing is a general term used to describe a new
class of network based computing that takes place over the
Internet,
• basically a step on from Utility Computing
• a collection/group of integrated and networked hardware,
software and Internet infrastructure (called a platform).
• Using the Internet for communication and transport provides
hardware, software and networking services to clients
• These platforms hide the complexity and details of the
underlying infrastructure from users and applications by
providing very simple graphical interface or API (Applications
Programming Interface).
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3. WHAT IS CLOUD COMPUTING?
• In addition, the platform provides on demand services,
that are always on, anywhere, anytime and any place.
• Pay for use and as needed, elastic
• scale up and down in capacity and functionalities
• The hardware and software services are available to
• general public, enterprises, corporations and
businesses markets
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4. ADVANTAGES OF CLOUD
COMPUTING
• Lower computer costs:
• You do not need a high-powered and high-priced
computer to run cloud computing's web-based
applications.
• Since applications run in the cloud, not on the desktop
PC, your desktop PC does not need the processing
power or hard disk space demanded by traditional
desktop software.
• When you are using web-based applications, your PC
can be less expensive, with a smaller hard disk, less
memory, more efficient processor...
• In fact, your PC in this scenario does not even need a CD
or DVD drive, as no software programs have to be
loaded and no document files need to be saved.
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5. ADVANTAGES OF CLOUD
COMPUTING
• Improved performance:
• With few large programs hogging your computer's
memory, you will see better performance from your PC.
• Computers in a cloud computing system boot and run
faster because they have fewer programs and processes
loaded into memory…
• Reduced software costs:
• Instead of purchasing expensive software applications, you
can get most of what you need for free-ish!
• most cloud computing applications today, such as the Google Docs
suite.
• better than paying for similar commercial software
• which alone may be justification for switching to cloud applications.
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6. DISADVANTAGES:
1 More dependence on
service provider
2 Risk of information
leakages
3 Availability depends on supplier’s factor
4 Users cannot be aware of network
5 Vendor lock-in
6 Might be slow

7. DISADVANTAGES:
- When a cloud service provider is attacked or suffers
from technical difficulties, every client suffers.
- An flawless internet connection must be
maintained.
- Cloud services can be vulnerable to attack, putting a
company’s sensitive information at risk. When
considering a cloud service, an organization must
remember that all of its information is being managed by
a third party provider.

8. PAAS
PLATFORM AS A SERVICE (PAAS) IS A CLOUD COMPUTING MODEL IN WHICH A THIRD-PARTY
PROVIDER DELIVERS HARDWARE AND SOFTWARE TOOLS -- USUALLY THOSE NEEDED FOR
APPLICATION DEVELOPMENT -- TO USERS OVER THE INTERNET. 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.
PAAS DOES NOT TYPICALLY REPLACE A BUSINESS'S ENTIRE IT INFRASTRUCTURE. INSTEAD, A
BUSINESS RELIES ON PAAS PROVIDERS FOR KEY SERVICES, SUCH AS APPLICATION HOSTING OR
JAVA DEVELOPMENT.
A PAAS PROVIDER BUILDS AND SUPPLIES A RESILIENT AND OPTIMIZED ENVIRONMENT ON
WHICH USERS CAN INSTALL APPLICATIONS AND DATA SETS. USERS CAN FOCUS ON CREATING
AND RUNNING APPLICATIONS RATHER THAN CONSTRUCTING AND MAINTAINING THE
UNDERLYING INFRASTRUCTURE AND SERVICES
MANY PAAS PRODUCTS ARE GEARED TOWARD SOFTWARE DEVELOPMENT. THESE PLATFORMS
OFFER COMPUTE AND STORAGE INFRASTRUCTURE, AS WELL AS TEXT EDITING, VERSION
MANAGEMENT, COMPILING AND TESTING SERVICES THAT HELP DEVELOPERS CREATE NEW
SOFTWARE MORE QUICKLY AND EFFICIENTLY. A PAAS PRODUCT CAN ALSO ENABLE
DEVELOPMENT TEAMS TO COLLABORATE AND WORK TOGETHER, REGARDLESS OF THEIR
PHYSICAL LOCATION.

9. PROS AND CONS OF PAAS
The principal benefit of PaaS is simplicity and convenience for users -- the PaaS
provider supplies much of the infrastructure and other IT services, which users
can access anywhere via a web browser. PaaS providers then charge for that
access on a per-use basis -- a model that many enterprises prefer, as it
eliminates the capital expenses they traditionally have for on-premises
hardware and software. Some PaaS providers charge a flat monthly fee to
access their service, as well as the apps hosted within it.
Service availability or resilience, however, can be a concern with PaaS. If a
provider experiences a service outage or other infrastructure disruption, this
can adversely affect customers and result in costly lapses of productivity.
Provider lock-in is another common concern, since users cannot easily migrate
many of the services and much of the data produced through one PaaS product
to another competing product. Users must evaluate the business risks of service
downtime and lock-in before they commit to a PaaS provider.
Internal changes to a PaaS product are also a potential issue. For example, if a
PaaS provider stops supporting a certain programming language or opts to use
a different set of development tools, the impact on users can be difficult and
disruptive. Users must follow the PaaS provider's service roadmap to
understand how the provider's plans will affect its environment and capabilities.

10. SOFTWARE AS A SERVICE (SAAS) IS A SOFTWARE DISTRIBUTION MODEL IN
WHICH A THIRD-PARTY PROVIDER HOSTS APPLICATIONS AND MAKES
THEM AVAILABLE TO CUSTOMERS OVER THE INTERNET. SAAS IS ONE OF
THREE MAIN CATEGORIES OF CLOUD COMPUTING, ALONGSIDE
INFRASTRUCTURE AS A SERVICE (IAAS) AND PLATFORM AS A SERVICE
(PAAS).
SAAS

11. • Software as a service (SaaS)is a software licensing and delivery model in which
software is licensed on a subscription basis and is centrally hosted. It is sometimes
referred to as "on-demand software", and was formerly referred to as "software plus
services" by Microsoft.] SaaS is typically accessed by users using a thin client via a
web browser. SaaS has become a common delivery model for many business
applications, including office software, messaging software, payroll processing
software, DBMS software, management software, CAD software, development
software, gamification, virtualization,accounting, collaboration, customer
relationship management (CRM), Management Information Systems (MIS),
enterprise resource planning (ERP), invoicing, human resource management (HRM),
talent acquisition, content management (CM), and service desk management.] SaaS
has been incorporated into the strategy of nearly all leading enterprise software
companies.[citation needed

12. INFRASTRUCTURE AS A SERVICE (IAAS) IS A FORM OF CLOUD COMPUTING THAT
PROVIDES VIRTUALIZED COMPUTING RESOURCES OVER THE INTERNET. IAAS IS ONE OF
THE THREE MAIN CATEGORIES OF CLOUD COMPUTING SERVICES, ALONGSIDE
SOFTWARE AS A SERVICE (SAAS) AND PLATFORM AS A SERVICE (PAAS).
INFRASTRUCTURE AS A SERVICE (IAAS) IS AN INSTANT COMPUTING INFRASTRUCTURE,
PROVISIONED AND MANAGED OVER THE INTERNET. QUICKLY SCALE UP AND DOWN
WITH DEMAND AND PAY ONLY FOR WHAT YOU USE.
IN AN IAAS MODEL, A CLOUD PROVIDER HOSTS THE INFRASTRUCTURE COMPONENTS
TRADITIONALLY PRESENT IN AN ON-PREMISES DATA CENTER, INCLUDING SERVERS,
STORAGE AND NETWORKING HARDWARE, AS WELL AS THE VIRTUALIZATION OR
HYPERVISOR LAYER. THE IAAS PROVIDER ALSO SUPPLIES A RANGE OF SERVICES TO
ACCOMPANY THOSE INFRASTRUCTURE COMPONENTS. THESE CAN INCLUDE DETAILED
BILLING, MONITORING, LOG ACCESS, SECURITY, LOAD BALANCING AND CLUSTERING,
AS WELL AS STORAGE RESILIENCY, SUCH AS BACKUP, REPLICATION AND RECOVERY.
IAAS CUSTOMERS ACCESS RESOURCES AND SERVICES THROUGH A WIDE AREA
NETWORK (WAN), SUCH AS THE INTERNET, AND CAN USE THE CLOUD PROVIDER'S
SERVICES TO INSTALL THE REMAINING ELEMENTS OF AN APPLICATION STACK. ANY
CLOUD COMPUTING MODEL REQUIRES THE PARTICIPATION OF A PROVIDER. THE
PROVIDER IS OFTEN A THIRD-PARTY ORGANIZATION THAT SPECIALIZES IN SELLING
IAAS. AMAZON WEB SERVICES (AWS) AND GOOGLE CLOUD PLATFORM (GCP) ARE
EXAMPLES OF INDEPENDENT IAAS PROVIDERS.

13. 1)COST SAVINGS
ENTERPRISES USING IAAS CAN DRAMATICALLY REDUCE THEIR
INFRASTRUCTURE COSTS, AS THEY NO LONGER NEED TO PURCHASE
HARDWARE FOR THEIR DATA CENTERS, MAINTAIN AND REPLACE EQUIPMENT,
OR ENSURE 24X7X365 UPTIME. A PAY-AS-YOU-GO MODEL — WHERE YOU
PAY FOR CAPACITY ONLY WHEN YOU NEED IT — ALSO ENABLES BUSINESSES
TO SAVE MONEY.
2)AROUND-THE-CLOCK AVAILABILITY
IAAS ENABLES ENTERPRISES TO ACCESS THEIR APPS, DATA AND OTHER
RESOURCES AS LONG AS AN INTERNET CONNECTION IS AVAILABLE.
COMPANIES INCREASINGLY RELY ON IAAS TO EMPOWER THEIR MOBILE
WORKFORCE, AND TO PROVIDE THE FOUNDATION FOR THEIR BUSINESS
CONTINUITY AND DISASTER-RECOVERY PLANS.
3)TIME TO MARKET
WITH ITS ON-DEMAND AVAILABILITY AND ROBUST AGILITY, IAAS LETS
COMPANIES MORE RAPIDLY DEVELOP AND DEPLOY NEW PRODUCTS AND
SERVICES, DECREASING THEIR TIME TO MARKET.
4)ON-DEMAND SCALABILITY
ENTERPRISES CAN QUICKLY SCALE THEIR CAPACITY UP AND DOWN
DEPENDING ON THEIR BUSINESS NEEDS, CHANGING OPPORTUNITIES IN THE
MARKETPLACE, OR CONSUMER DEMAND.

14. PRIVATE CLOUD COMPUTING
• Private cloud is a type of cloud computing that delivers similar advantages to public
cloud, including scalability and self-service, but through a proprietary architecture.
Unlike public clouds, which deliver services to multiple organizations, a private cloud is
dedicated to the needs and goals of a single organization.
• As a result, private cloud is best for businesses with dynamic or unpredictable
computing needs that require direct control over their environments, typically to meet
security, business governance or regulatory compliance requirements.

15. PUBLIC CLOUD COMPUTING
• A public cloud is one based on the standard cloud computing model, in which a service
provider makes resources, such as virtual machines (VMs), applications or storage,
available to the general public over the internet. Public cloud services may be free or
offered on a pay-per-usage model.
• The main benefits of using a public cloud service are:
it reduces the need for organizations to invest in and maintain their own on-
premises IT resources;
it enables scalability to meet workload and user demands