This document discusses cloud computing, including its introduction, characteristics, layers, types of cloud computing models, advantages, disadvantages and conclusion. Specifically, it defines cloud computing as the delivery of computing as a service rather than a product, allowing end-users access to remote computing sites through the internet without requiring knowledge of the underlying system. It outlines key characteristics like security, cost efficiency and scalability. The document also differentiates between infrastructure as a service, platform as a service and software as a service models and notes both advantages like easy scalability and disadvantages such as loss of control over data. In conclusion, it acknowledges risks but argues there are also technical security advantages to cloud computing if risks can be managed.

1. Cloud Computing
By : Ahsan Aziz Abbasi

2. Introduction: Cloud computing is a marketing term for technology
 End - user do not require any knowledge regarding system
 It gives ease-of-access to remote computing sites provided by
the Internet
 Users can access and use facilities through a web browser
 Simply we can say cloud computing the delivery
of computing as a service rather than a product
Why Cloud Computing????

3. Characteristics: Security focused
 Empowerment of end-user
 Application programming interface (API)
 Cost efficient
 Agility of infrastructure
 Multi-tenancy of resources
 Reliability improved
 Scalability and Elasticity of resources
 Performance monitoring

4. Layers:-

5. 1. Cloud Infrastructure
2. Cloud Service
3. Cloud Platform
4. Cloud Storage

6. Types of Cloud Computing Model:-
1
Infrastructure as
a Service (IaaS)
In this architecture
you're buying access
to raw computing
hardware over the
Net, such as servers
or storage.
2
Software as a
Service (SaaS)
In this architecture
you use a complete
application running
on someone else's
system
3
Platform as a
Service (PaaS)
In this you develop
applications using
Web-based tools so
they run on systems
software and
hardware provided
by another
company.

7. Advantages: Cloud computing allows you to buy in only the services you want
 Avoid equipment going out of date
 It's really quick and easy to add new applications or services to
your business
 A physical storage center is no longer needed.
 Relieves burden on IT Professionals and frees up their time in the
office
 Easily scalable
 Access your data at all times

8. Disadvantages:× Lost control comes with handing over your data and
information
× Depending on third-party to ensure the security and
confidentiality of data and information
× If your cloud host disappears, where does your information
go?
× Not applicable for small business
× If you're using software as a service you need a reliable,
high-speed, broadband Internet connection functioning the
whole time you're working.

9. Conclusion:-
Final Overview:There are some strong technical security
arguments in favor of Cloud Computing
assuming we can find ways to manage the risks.

10. Disadvantages
Advantages

12. References:How stuff works
http://communication.howstuffworks.com/
Wikipedia
http://en.wikipedia.org
Cloud security.org
http://cloudsecurity.org
Advantages and Disadvantages
http://www.cloudtweaks.com/2011/07/cloud-computingadvantages-disadvantages-infographic/
http://www.colocationamerica.com/dedicated_servers/adva
ntages-and-disadvantages-of-cloud-computing.htm

13. Any Question??

14. Thank you!!
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