Slides cloud computing

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Slides cloud computing

  1. 1. CLOUD COMPUTING
  2. 2. Introduction Cloud computing is where computing resources are accessed from a virtual online "cloud" rather than a local desktop or organizational data centre.
  3. 3. Contents Background Characteristics Economics Layers Types Advantages and Disadvantages Conclusion
  4. 4. Definition Cloud computing is internet–based computing, whereby:  shared resources  software  information are provided to computers and others devices on demand, like the electricity grid.
  5. 5. Background Reincarnation of centralized data processing and storage as paralleled by the mainframe. A mainframe (also known as Big Iron) is: A large computer Used by large organization Used for bulk data processing
  6. 6. Background A large network of computers. Used by large organizations to provide services to smaller ones and individuals. Used for bulk data processing. Synonyms: Grid Computing, SaaS, Network Computing, Utility Computing.
  7. 7. Characteristics Virtually Pay-per-use assemble Offsite Shared Characteristics workloads technology Massive On-demand scale self service
  8. 8. Economics
  9. 9. Companies are looking for new ways to: Reduce costs Faster time to Increase reliability value • Pay for only what • Improve system • Quickly take we use reliability advantage of • Reduce hardware • Improve system latest investment availability technologies • Reduce software • Simplify updating licenses and upgrading • Lower labor and IT • Increase speed of support costs deployment • Lower outside • Scale IT resources maintenance cost to meet business needs
  10. 10. Layers of the cloud Client Application Platform Infrastructure Server
  11. 11. Important topics of cloud computing • The various types and vendors of cloud computing services • Advantages and disadvantages of cloud computing
  12. 12. Types and vendors of cloud computing services Simplest form Types of cloud computing More complex form
  13. 13. Simplest form Search engines Webmail BACK
  14. 14. More complex form 1. Web–based office application.  Online photo and document sharing Eg: ZOHO Work Online, Live Mesh 2. Branded, Domain-wide web service.  Hosted spam filtering Eg: postini, Google apps, Microsoft Office Live Beta 3. Large-scale web-based storage and computing power for building your own application. Eg: Amazon web services, Google app Engine BACK
  15. 15. Advantages and disadvantages • Lower software cost • Improve performance Advantages • Fewer maintenance issue • Instant software updates • Increased data safety • Requires a constant internet connections • Doesn’t not work well in low Disadvantages speed connections • May be slow • Limited features
  16. 16. Conclusions Cloud computing increases profitability by improving resource utilization. Costs 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.
  17. 17. Reference • Wikipedia: Cloud Computing. en.wikipedia.org/wiki/Cloud_computing • Wikipedia: Mainframe Computer. en.wikipedia.org/wiki/Mainframe_computer

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