cloud computing relies on sharing computing resources rather than having local servers or personnel devices to handle applications.

1. VIJAYA LAKSHMI.G

2. INDEX
 What is cloud computing
 How it works
 Past ,present, future technologies
 Overview of cloud computing
 Applications
 Advantages and disadvantages
 Conclusion

3. Cloud Computing:
Cloud Computing is a type of computing that relies
on sharing computing resources rather than having local
servers (or)personnel devices to handle applications.
In cloud computing the word cloud is used as the
metaphor for “The internet” so the phrase Cloud
Computing means “A type of internet based computing.”
where different services such as server , storage &
applications are delivered to an organizations computers
& devices through the internet.

4.  Father of Cloud Computing is JOHN MC CARTHY
Carthy said “If computers of the kind
I have advocated become the computers
Of future then computing may someday be
Organized as a public utility just as a
telephone system . The computer utility
Could become the basis of new & important
industry”

5. Cloud Computing:

6. Working:
 The goal of Cloud Computing is to apply traditional
super computer , with high performance computing.
 Cloud Computing uses networks of large groups of
servers typically running low cost consumers PC
technology with specialized connections to spread
data processing cores across them.
 Cloud Computing systems offered by companies like
IBM’s “Blue Cloud.”

7. Working:

8. Past technologies:
 The underlying concept of Cloud Computing dates back to
1950’s.
 John Mc Carthy said in 1960’s that “The computation may
someday be organized as a public utility.”
 In 1990’s Cloud Computing extends this boundary to
cover servers as well as network infrastructure.
 In 2000 after the dot com bubble , amazon played a key
role in all the development of Cloud Computing.

9. Past technologies:

10. Present technologies:
 The need for greater flexibility & lower capital cost is
continuing to increase demand for Cloud based
services.
 With the announcement of apple’s iCloud , Cloud
Computing has been on everyone’s mind at some
point over the past few months.
 Despite the increased public awareness of the cloud ,
the majority of the public still find themselves asking;
“How does it works?”

11. Present technologies:
 The “ Cloud is a simple idea , but a more complex entity.”
 Some present techniques:
1.The iPad effect on business : The enormous popularity of
the iPad has not only been lucrative for apple , it has also
shown the world how enterprisers on the spot.
2.Need for cost control : while the “Great recession” may
have subsided , uncertainity about the speed & timing of
an economic recovery is keeping the pressure on
organizations to reduce costs & limit investments until
business demand returns.

12. 3.Pricing confusion : In theory , the Cloud Computing
marketing is pay-as-you-go . But in practice , it can be
hard to discern just what you will pay & just what you
will get.
4.Changing landscape : organizations should be thinking of
their Cloud Computing strategy as a road map that will
help them navigate this increasingly cluttered landscape
&arrive at the right set of vendors & solution for their
needs.
5.Only the beginning : Cloud Computing only works as an
organization manages it . The only path to such a system
is through productive strategic thinking well in advance of
implementation migrating a service to the cloud is only
just the beginning.

14. Overview of Cloud Computing:
 Cloud Computing can be thought as an extension to the
existing information technology capabilities.
 Cloud Computing is categorized into three levels of
services:
1.Infrastructure as a service (IAAS).
2.Platform as a service( PAAS).
3.Software as a service (SAAS)
 These services serves as the back bone of the Cloud
Computing.

16. IAAS:
 It is the access of hardware (server , storage , network).
 It is an evolution of traditional hosting that does not
require any long term commitment & allows users to
provision resources on demand.
 The IAAS providers will generally provide the
hardware & administrative services needed to store
applications & a platform to running applications.

17. PAAS:
 In the traditional computing model each
application managed locally acquired hardware
, an operating system , a data base , middleware
, web servers and other software.
 The pass makes available a stage to the
consumer to execute the much needed
applications of the consumer.

18. SAAS:
 SAAS is highly flexible , scalable , great
performance with better availability , vast
services and less maintenance.
 SAAS is always up to date . It runs the most
recent version of application.
 It eliminates the needs of install hardware or
software on the client premises. SAAS offers
the software on demand.

20. Applications:
The regular applications are:
1.Gmail.
2.Google maps , sites etc.
3.Drop box.
4.Base camp.
5.High rise.
6.Back pack.
7.Camp fire.
8.Ever note.

21. Advantages:
 There are many advantages of Cloud
Computing , some of them are:
1.Achieve economics of sale.
2.Less personnel training is required.
3.Reduce spending on technical infrastructure.
4.Improve flexibility.

22. Disadvantages:
Inspite of many benefits , as mentioned
above , Cloud Computing also has its own
disadvantages:
1.Technical issues.
2.Security in the cloud.
3.Prone to attack.

23. Conclusion:
Be prepared.
The hype surrounding
Cloud Computing is expected to
reach unprecedented levels over
the next few years.