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Slides cloud computing Slides cloud computing Presentation Transcript

  • CLOUD COMPUTING
  • Introduction Cloud computing is where computing resources are accessed from a virtual online "cloud" rather than a local desktop or organizational data centre.
  • Contents Background Characteristics Economics Layers Types Advantages and Disadvantages Conclusion
  • 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.
  • 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
  • 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.
  • Characteristics Virtually Pay-per-use assemble Offsite Shared Characteristics workloads technology Massive On-demand scale self service
  • Economics
  • 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
  • Layers of the cloud Client Application Platform Infrastructure Server
  • Important topics of cloud computing • The various types and vendors of cloud computing services • Advantages and disadvantages of cloud computing
  • Types and vendors of cloud computing services Simplest form Types of cloud computing More complex form
  • Simplest form Search engines Webmail BACK
  • 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
  • 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
  • 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.
  • Reference • Wikipedia: Cloud Computing. en.wikipedia.org/wiki/Cloud_computing • Wikipedia: Mainframe Computer. en.wikipedia.org/wiki/Mainframe_computer