this presentation is made by me. do comment if you like.. you are allowed to use it :)

1. Topic: CLOUD COMPUTING
Group Members:
Sabeeh Ahmed
Syed Mohsin
Semester: 5th

2. Why Cloud Computing is Called
CLOUD COMPUTING
• Name shows something very big.
• Globally same services (As clouds)
• Virtualization
• It's hard to measure a cloud (both)
• clouds are opaque and you can't see what
goes on inside them.
• Elastic

3. Traditional Hosting vs Cloud
Computing

4. What is Traditional Hosting
Shared hosting
Traditional Hosting
Dedicated Hosting
 Shared hosting
 Is usually for small and medium sized business.
 Client can pay set amount of space on a single
server.
 server's resources are shared by a number of
other websites

5. Dedicated hosting
 a company pays for the complete resources
of one or more servers from a service
provider.
 he client has dedicated bandwidth, CPU, RAM,
and drive space.
 has full control over the servers resources.

6. Cloud Computing
• It is a service rather than a product.
• Can access cloud based applications through
a web browser or a light weight desktop
or mobile app
• No need to install software and high
configured machinery.
• All you need is INTERNET having good speed.
• Service is fully managed by provider.
• A simple example of cloud computing is
Yahoo, Gmail , Hotmail etc

7. Kinds Of Cloud

8. Public Cloud
• Computing infrastructure is hosted at the
vendor’s premises.
• customer has no visibility over the location of
the cloud computing infrastructure.
• computing infrastructure is shared between
organizations.

9. Private Cloud
• Computing architecture is dedicated to the
customer.
• not shared with other organizations.
• They are expensive
• secure than Public Clouds.
• May hosted externally or internally

10. Hybrid Cloud
• The combination is known as Hybrid Cloud.
• Organizations host some critical, secure
applications in private clouds.
• not so critical applications are hosted in the
public cloud.
• Combine to form hybrid cloud

11. Features
 Agility. (efficiently adapting to changes)
 Cost. (claimed to be reduced)
 Device and location independence.
 Security. (improve due to centralization of data)
 Maintenance. (is easier)
 Reliability. (is improved)

12. Service Models

13. IaaS (Infrastructure as a service)
• most basic cloud service model.
• organization used the equipment to support operations.
• The service provider owns the equipments.
• Responsible for
Housing
Running
Maintaining
• sometimes referred to as Hardware as a Service (HaaS).
• EC2, Amazon S3, Rackspace Cloud Servers are some of
the leading vendors.

14. SaaS (Software as a service)
• Providers install and operate the software in cloud
• Can access through cloud clients.
• Global accessibility
• No hectic install application on your PC.
• What makes a cloud application different from other
applications is its elasticity.
• i.e. cloning tasks onto multiple virtual machines.
• Gmail and Hotmail are prime examples of SaaS.

15. PaaS (Platform as a service)
• providers deliver computing platform.
• including
operating system,
programming language execution environment
database.
web server.
• No need to buy and manage hardware and software
• Google App Engine, Microsoft Azure and Saleforce.com are
some of the leading vendors.

16. Major Difference between Traditional
Hosting and cloud computing
• Cloud Computing is sold on demand
• The service is managed by the provider
• User can determine the amount of service
they take
• Users can log on to the network from any
computer in the world

17. Risks of Cloud Computing
• take a long time to resolve.
• Terms and condition issue
• You are dependent on cloud computing
provider.
• Data migration issues when changing cloud
provider
• What happens if your cloud provider goes out
of business?

18. Summary + Quick look

20. Cloud Failures
• Amazon's failures: (April 22, 2011)
Quora.com, Reddit.com, GroupMe.com and
Scvngr.com unable to access.
• Microsoft online services hit by major failure:
(September 9, 2011)
Hotmail, Office 365 and Skydrive