Slides about Cloud Computing, its services, model, characteristics ,advantage and disadvantage

2. Cloud computing is internet based computing whereby :
shared resources, software , information are provided to
user on demand like electricity grid.
For example
When you store photos online
Use webmail
Use social networking site etc.
All you are using cloud computing service

3. Background
 The concept began with ARPANET in 1969, which was the precursor to
what we know today as the internet.
 The mid-1990s saw the advancement of the internet being connected to
huge numbers of personal computers, rather than just business ones.
 With the arrival of greatly expanded web capability in 2003(Web 2.0),
videos, music and other multimedia could be hosted and delivered online
 By 2006, ‘the Cloud’ began to be talked about openly. Google continued to
bring cloud computing into common usage with the release of Google Apps
in 2009.
 The end of 2009 saw cloud computing begin to dominate a very specific
start-up and enterprise market.
 Cloud services like YouTube and Google have had huge impacts on the
social aspects of our daily lives. Services such as Twitter and Facebook
have changed everything from ordering goods to interacting with our
appointed representatives in government.

4. Cloud Computing Services
Software As A Service (Saas)
Platform As A Service(Paas)
Infrastructure As A Service(Iaas)

5. Software As A Service (Saas)
 Also known as On-demand Service.
 An application that can be accessed from anywhere on
the world as long as you can have an computer with an
Internet Connection.
 We can access this cloud hosted application without any
additional hardware or software.
 E.g. : G-mail, Yahoo mail, Hotmail.

6. Platform As A Service (Paas)
 Give us nice API (Application Programming Interface) and
take care of the implementation.
 In the PaaS model, cloud providers deliver a computing
platform and/or solution stack typically including
operating system, programming language execution
environment, database, and web server.
 A platform for developers to write and create their own
SaaS i.e. applications.
 Which means rapid development at low cost.
 E.g.: Salesforce.com, Windows Azure etc.

7. Infrastructure as a Service (IaaS)
 Also known as hardware as a service.
 A computing power that you can rent
for a limited period of time.
 Allows existing applications to be
run on a cloud suppliers hardware.
 Cloud providers offer computers – as physical or more
often as virtual machines – raw (block) storage, firewalls,
load balancers, and networks.

8. Modes of Clouds
Public cloud
Private cloud
Hybrid cloud

9. Public cloud
 Computing infrastructure is hosted by cloud vendor at the
vendors premises.
 can be shared by various organizations.
 E.g. : Amazon, Google, Microsoft, Sales force

10. Private Cloud
 The computing infrastructure
is dedicated to a particular
organization and not shared
with other organizations.
 more expensive and more secure when compare to public
cloud.
 E.g. : HP data center, IBM, Sun, Oracle, 3tera

11. Hybrid Cloud
 Organizations may host critical applications on private
clouds.
 Where as relatively less security concerns on public cloud.
 Usage of both public and private together is called hybrid
cloud.

12. CHARATERISTICS
SHARED
WORK
LOAD
PAY PER
USE
ON
DEMAND
SELF
SERVICE
MASSIVE
SCALE
OFSIDE
TECHNOLOGY

13. Advantages and disadvantages
Advantages :
 Low software cost
 Increase data safety
 Improved performance
Disadvantages :
 Require a constant internet connection
 May not work for poor internet connection

14. Conclusion
 Cloud computing increases profitability by improving
resource utilization. Cost are driven down by delivering
appropriate resources only for the time those resources
are needed.
 Cloud computing has enabled teams and organizations to
streamline lengthy procurement processes.

15. Made By : Asghar Ismail (18-CP-01)
Computer Engineering
University Of Engineering And
Technology(UET) Taxila, Pakistan