Cloud Computing

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Overview of cloud computing

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Cloud Computing

  1. 1. Cloud Computing <ul><li>Computing resources accessed over a network
  2. 2. Computation
  3. 3. Software
  4. 4. Data Storage and Retrieval </li></ul>
  5. 5. Nature of the Cloud <ul><li>What type of computer resources provide my cloud service?
  6. 6. What operating system do they run?
  7. 7. Where are the computer resources? </li></ul>Don't Know. Don't Care!
  8. 8. Computation <ul><li>Number crunching – data modeling, weather forecasting, DNA/genome mapping
  9. 9. Previously the domain of supercomputers costing millions
  10. 10. Now available to rent for a few dollars per hour </li></ul>
  11. 11. Software <ul><li>Cloud software not a new concept (Hotmail dates back to 1996)
  12. 12. Often described as SaaS or Software as a Service </li></ul>
  13. 13. Software - examples <ul><li>Gmail
  14. 14. Google Documents
  15. 15. MailChimp
  16. 16. Zoho business suite </li></ul>
  17. 17. Data Storage and Retrieval <ul><li>Some free services, some premium services
  18. 18. Some systems have guaranteed backups
  19. 19. Some systems store the data in encrypted form
  20. 20. Not to be seen as a hard drive replacement - works best for moderate amounts of data </li></ul>
  21. 21. Data Storage - examples <ul><li>Dropbox
  22. 22. MegaFileUpload
  23. 23. Microsoft SkyDrive
  24. 24. Amazon AWS simple storage </li></ul>
  25. 25. Disadvantages <ul><li>Requires an internet connection
  26. 26. Cloud providers can (and do) break down occasionally http://eu.techcrunch.com/2011/04/21/amazon-ec2-goes-down-taking-with-it-reddit-foursquare-and-quora/
  27. 27. Legal and Privacy concerns </li></ul>
  28. 28. Advantages <ul><li>Easily scalable
  29. 29. Most technical aspects are handled by cloud provider
  30. 30. You don't need to worry about updating software or licenses.... ever
  31. 31. Modest computer and web browser is all you need. Smartphone may even be enough! </li></ul>
  32. 32. Advantages ctd. <ul><li>Typically more reliable than onsite hardware
  33. 33. Typically much cheaper than buying/maintaining traditional hardware/software </li></ul>

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