Cloud computing is the collection of various hardware and software that work together to provide different spheres of computing to the end-user as an online service.It provides the centralization of data.

1. PRESENTATION ON
CLOUD COMPUTING

2. INTRODUCTION
• Cloud computing is the collection of various
hardware and software that work together to
provide different spheres of computing to the
end-user as an online service.
• With this new technology, the clients can
easily access their personal data stored in
cloud anywhere, in any system.
• They need not carry their data everywhere
along with them.
• It provides the centralization of data.

3. Difference between PC’s
storage and Cloud
Computing
• Unlike conventional computing where data
is stored on your PC’s local disk drive
• Data in the cloud is stored on a number of
virtual or physical servers and is hosted by
a third-party service provider.

4. Features of Cloud
• Clients would be able to access their
applications and data from anywhere at
any time.
• It could bring hardware costs down.

5. Models of Cloud Computing
• Service Model: This is the model which
includes the establishment of the cloud
architecture so that the company or the
organization could make use of it. It
includes providing all the hardware that
would be required and the environment to
run cloud.

6. • Infrastructure as a Service (IaaS)
1. All the necessary hardware that are
required is made available to the
organization by the vendors. Hardware
components like servers with the required
capacity, communication technology and
operating system for utilizing these
services.
2. Some companies that provide
Infrastructure as a Service are TCS,
Wipro, Infosys etc.

7. • Platform as a Service (PaaS)
1. After the hardware requirements have been
fulfilled, the second step that is required is to
provide an environment to work in the cloud.
2. The software and programming languages
that are required for the environment like
.net, java etc. is provided.
3. Some of the renowned PaaS companies are
Amazon Web Services, Sales Force,
LongJump, Windows Azure, IBM smart
cloud, Open shift, Cloud bees, Google App
Engine, Engine yard etc.

8. • Software as a Service (SaaS)
1. It can be asked by the vendor if required
i.e., the vendor provides this service on
demand.
2. The major issue after the installation is
the maintenance of that software so,
software as a service helps to resolve this
problem.
3. The company need not worry about the
installations and the maintenance of the
software.

9. • b. Deployment Model: It is the model
used at the time when we are deploying
our cloud for people to use and this is the
model responsible for the type of
accessing over the cloud.

10. • Public Cloud
1. These are the clouds that are situated away
from the customer premises and are run by
the third parties or the vendors.
2. Public cloud avoids the customer risk and
reduces the cost inculcated by providing a
ready-made solution.
3. Amazon Elastic Compute Cloud (EC2),
IBM's BlueCloud, Sun Cloud, Google
AppEngine and Windows Azure Services
Platform are examples of the public cloud.

11. • Private Cloud
1. the whole infrastructure of the cloud is
owned by the client and all the controls of
the cloud are in the hands of the
company that purchased it.
2. Companies whose prime concern is the
security are more likely to opt for private
clouds as it is completely implemented as
well as maintained from the client side.

12. • Hybrid Cloud
1. Hybrid clouds are a bit complex clouds as
it is a mix of the two i.e., the public and
the private cloud. Hybrid clouds are
generally used by the customers using
small data.
2. For heavy data working it results to be
more complicated.

13. • Community Cloud
1. It is the model used when the cloud is
designed particularly for a group of
people or specifically for a community of
people or for the group of similar
organizations with same interests.

14. Security in cloud
• The users upload the personal and classified
data over the cloud. Security is mandatory for
such type of outsourced data, so that users
are confident while processing their private
and confidential data.
• Public cloud is least secured cloud as all our
personal data files are open to all and anyone
at any point of time could access it whereas
private cloud is comparatively of high security
as in that there is a restriction over data
accessing.

15. Conclusion
• The constant trigger to enhance the
storage and management of data gave
birth to this technology.
• Cloud is an opportunity to improve the way
of information delivery and services in this
era of the information society.