1. Presented by _
MYNK

2. What is Cloud Computing?
History
 Types of cloud computing.
How cloud computing works
Service models
 why cloud computing
 Characteristics
Difference between cloud computing and web
hosting
Advantages & Disadvantages

3.  “Cloud” is simply a metaphor for the internet. The
name comes from the use of a cloud-shaped symbol as
an abstraction for the complex infrastructure.
 It is a technology that uses the internet & central
remote servers to maintain data & application.
 Users simply rent or access the software, paying only for
what they use.
 Cloud computing allows consumers to use applications
without installation & access their personal files at any
computer with internet access.

5. The analogy is “ If you need milk,
would you buy a cow?”

6. The concept was born in the 1960 from the
ideas of pioneers like-
J.C.R Lickliden (instrumental in the
development of ARPANET

7. John McCarthy( who coined the term “artificial
intelligence”)
“computation may someday be
organized as a public utility”
In 1997 the term “cloud computing” was first used
by information system professor Ramnath
Chellappa

9.  Public cloud:-A public cloud
is one based on the standard
cloud computing model, in
which a service provider
makes resources, such as
applications and storage,
available to the general
public over the Internet.
Public cloud services may be
free or offered on a pay-per-
usage model.
Example-Amazon Ec2

10.  Private cloud:- The computing
infrastructure is dedicated to a
particular organization and not
shared with other
organizations.
Example- VMware, 3D Render
Farm used to create 3D content

11.  Hybrid cloud:-
Organizations may
host critical
applications on private
clouds and
applications with
relatively less security
concerns on the public
cloud. The usage of
both private and public
clouds together is
called hybrid cloud.

12. Cloud computing consists of following layers
Back end layer- the one you see and interact with.
example – when you access your e-mail on
g-mail.
Front end layer – consist of hardware and software
architecture that delivers the data you see on the
front end.

16. Software as a service (SaaS)
It is a software distribution model. In this model
applications are made available to customers over a
network, typically the internet. SaaS describes when
users ‘rent’ or borrow online software instead of actually
purchasing and installing it on their own computers.
Examples - Google Apps, QuickBooks Online,
Salesforce.com

17. Platform as a service (PaaS)
This is a variant of SaaS. You run your own application
but you do it on the cloud provider’s infrastructure.
While SaaS offers applications for end users PaaS offers
a development platform for developers . Developers do
not need to worry about the OS , storage or hosting.
Developers write the code and PaaS provider provides
a very simple method to upload that code and present
it on the internet.
Examples of PaaS include: Amazon Elastic Beanstalk,

18. Infrastructure as a service (IaaS)
This is the base structure of the cloud stack. It
serves as a foundation for the other two layers for
their execution. In IaaS you pay only for the
resources you actually consume.
Example- Amazon Ec2

20. Clients would be able to access their
application and data from any where at
anytime
It could bring hardware costs down.
The companies don’t have to buy a set of
software or licenses for every employee.

21.  Cost Effective
 User centric
 Powerful
 Self Healing
 Flexible
 Lots of Storage Space
 Device Diversity

22. CLOUD COMPUTING WEB HOSTING
You pay a fixed amount
 You pay only for the
even if you don’t use the
resources you actually resources
consume
 You can easily configure Does not have this
your resources based on feature
your computing
requirements

24. Inexpensive
 you do not need to purchase additional hardware
 your server will have offsite backup in case
something goes wrong
 lots of storage space.
Pay only for resources you actually consume
 you can configure your resources

25. Security issue
Infrastructure
 No easy migration
Even on fast connection web based applications can sometimes
be slower
 Requires a constant Internet connection
 Limited features