This document discusses cloud computing concepts including software as a service (SaaS), platform as a service (PaaS), hardware as a service (HaaS), and virtualization. It outlines the traditional computing stack versus the virtualized cloud computing stack. Some advantages of cloud computing are lower costs, improved performance, unlimited storage, and availability, but there are also security, privacy, and legal issues to consider. Major technology companies are investing billions of dollars in cloud computing research and development.

1. Cloud Computing
Talal Alsubaie
DBA
Saudi FDA

2. You Have a System (Website)

3. People Likes it

6. Performance Goes Down

11. Solutions

12. Concepts
• Software as a Service (SaaS)
• Virtualization

13. Software as a Service (SaaS)
Someone else owns the application
Pay fixed subscription fee

14. Software as a Service (SaaS)

15. Software as a Service (SaaS)

16. Software as a Service (SaaS)

17. HaaS & PaaS
• Hardware As A Service
• Platform As A Service
• Both runs on the same concept as SaaS.

18. Virtualization

19. Virtualization
App App App
App App App OS OS OS
Hypervisor
Operating System
Hardware Hardware
Traditional Stack Virtualized Stack

20. Virtualization
• Can run any ware.
OR in the
▫ In your data center.
▫ Or in the applications provider center.
Cloud App 1 App 2
App 1 App 2
OS OS
OS OS

21. Cloud Provider

22. Cloud Computing
• It is a style of computing in which dynamically
scalable and often virtualized resources are
provided as a service over the Internet
• Does not worry about the backend

23. Traditional Stack
Cloud Computing

24. Traditional Data Center
Buy the Car

25. SaaS
Leasing a Car

26. Cloud
Pay as you GO

27. Traditional IT Cost Model

28. Cloud Computing Cost Model

29. Traditional IT Cost Model

30. Cloud Computing Cost Model

31. Cloud “Applications”
• Examples: Gmail, Yahoo! Mail
• Advantages: Free, Easy, Consumer Adoption
• Disadvantages: Limited functionality, no control
or access to underlying technology

32. Cloud “Platforms”
• “Examples: Google App Engine, Heroku, Mosso, Engine
Yard, Joyent or Force.com (SalesForce Dev Platform)
• Advantages: Good for developers, more control than
“Application” Clouds
• Disadvantages: Restricted to what is available, other
dependencies

33. Cloud “Infrastructure”
• Provide “Compute” and “Storage” clouds
• Virtualization layers (hardware/software)
• Examples: Amazon EC2, GoGrid, Amazon S3, Nirvanix,
Linode
• Advantages: Full control of environments and
infrastructure
• Disadvantages: limited competition

34. Cloud Advantages
• Lower computer costs
• Improved performance
• Unlimited storage capacity
• Device independence
• Availability

35. Issues…
• Requires a constant Internet connection
• Security & Privacy
• Legal Issues
• Political Issues
• Related Bandwidth Cost
• Transparency

36. But …
• Cloud Computing is a very active research area.
• Many large companies are behind the
technology, and investing
BILLIONS OF DOLLARS

37. Who is behind Cloud Computing

39. Google Trends…

40. THANKS ALLOT
Talal A. Alsubaie
DBA
Saudi FDA
t@talals.net