introduction to cloud computing,storing and accessing data,characteristics: on-Demand Self Service,heterogeneous access,Resource pooling,Measured service,Services:SAAS, PAAS, IAAS, Deployment model:public,private,hybrid,community clouds,related OS,advantages and disadvantages.

1. NADAR SARASWATHI COLLEGE OF ARTS AND SCIENCE,
THENI.
CLOUD COMPUTING
SUBMITTED
BY
P.VINITHA
IIM SC(CS&IT)
M.SURYA
IIM SC(CS&IT)

2. INTRODUCTION
 Cloud Computing simply means storing and accessing data and
programs over the internet instead of computer’s hardware.
 It provides developing environment, ability to manage the
resources, application software over the cloud.
 Users can access the services available on the cloud by having an
internet connection.
 Clouds is an oversized pool of simply usable and accessible
virtualized resources.

3. WHAT IS CLOUD COMPUTING
 Cloud computing is a model for enabling convenient, on-demand network
access to a shared pool of configurable computing resources (e.g., networks, servers,
storage, applications, and services)
 It can be rapidly provisioned and released with minimal management effort.
 It provides high level abstraction of computation and storage model.
 Some examples are :
* Google
* Microsoft
* Amazon

4. Characteristics
On-Demand Self Service:
 A consumer can unilaterally provision computing capabilities,
automatically without requiring human interaction with each
service’s provider.
Heterogeneous Access:
 Capabilities are available over the network and accessed
through standard mechanisms that help use by heterogeneous
thin or thick client platforms.

5. Resource Pooling:
 The provider’s computing resources are pooled to serve
multiple consumers using a multi-tenant model.
 Different physical and virtual resources dynamically assigned
and reassigned according to consumer demand.
Measured Service:
 Cloud systems automatically control and optimize resources
used by leveraging a metering capability at some level of
abstraction appropriate to the type of service.
 It will provide analyzable and predictable computing
platform.

6. SERVICES ON CLOUD COMPUTING

7. SAAS
 SAAS-Software as a services
* The major service given as part of cloud computing services.
* The first service.
* Most known and used
 The application itself is provided by service provider.
 Examples:
* Enterprise:SalesForce.com,webex,officeLive
* User Mail:Gmail,Hotmail
* User pics:Flickr,picasa

8. IAAS
 IAAS-Infrastructure as a service
 Service providers offers capacity for rent, basically hosted data
centers servers
 An evolution of website and server hosting services which
provided servers and VPS
 Examples
* Verizon's CAAS-computing as a service
*AT&T-Hosting and storage

9. PAAS
 PAAS-platform as a service
 Platform enables application developers to host their services
 Examples:
Google's appengine

10. DEPLOYMENT MODEL
 Private Cloud:
The cloud is operated solely for an organization. It may
be managed by the organization or a third party and may
exist on premise or off premise.

11. Community Cloud:
 The cloud infrastructure is shared by several
organizations and supports a specific community that
has shared concerns.
 It may be managed by the organizations or a third party
and may exist on premise or off premise

12. Public Cloud:
 The cloud infrastructure is made available to the general
public or a large industry group and it is owned by an
organization selling cloud services.

13.  Hybrid cloud:
 The cloud infrastructure is a composition of two or more
clouds (private, community, or public).

14. CLOUD OPERATING SYSTEM
 Eye os
 Amoeba os
 Glide os
 Start force
 my Goya
 Lucid Desktop
 Cloudo,Ghost,Start force

15. Advantages of Cloud Computing
 Cloud computing do not need high quality equipment for user,
and it is very easy to use.
 Provides dependable and secure data storage center.
 Reduce run time and response time.
Disadvantages of cloud computing
 Cloud computing is impossible if you cannot to the internet.
 Since you use the internet to connect to both your applications and
documents, if you do not have an internet connection you cannot
access anything, even your own documents.
 When you are offline, cloud computing simply does not work.

16. CONCLUSION
 Thus cloud computing provide a super computing power.
 This cloud of computers extends beyond a single company or
enterprise.
 The applications and data served by the cloud are available to
broad group of users, cross-enterprise and cross platform.