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Cloud Computing …

Cloud Computing

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  • 1. Cloud Computing Introduction to Cloud Computing
  • 2. What is “ In the Cloud…”
    • “ Internet-based computing” - Referring to both the applications available as services online as well as the actual hardware and software in the data centers that provide the services
    • In mainstream news/media, Cloud Computing an elastic term shifting meaning over the past few years to incorporate more and more
    • Defined in many ways – called Software as a Service, Platform as a Service, Infrastructure as a Service, on-demand computing, cloud computing
  • 3.
    • BUT!
    • In it’s most basic existence, Cloud Computing is the migration of software from local computers or in-house systems to Internet, mostly third party hosted, servers.
    What is “ In the Cloud…”
  • 4.
    • Examples (from Brain Hayes)
    • Productivity Applications: Google Docs (Word Processing, Spreadsheets, and Powerpoint-like presentations), Buzzword (Word Processing), or Photoshop Express (image-manipulation)
    • Software for Business Application (customer support, sales, marketing): Salesforce
    • Infrastructure Online: Amazon Web Servce (an “internet ecosystem”)
    What is “ In the Cloud…”
  • 5.
    • The majority of Cloud Computing Applications reside inside a single Web Browsing window
    • A reproduction of the familiar desktop feel – icons, files, folders, applications, “living in a browser”
    What is “ In the Cloud…”
  • 6. What is “ In the Cloud…”
  • 7. Economics of Cloud Computing
    • Businesses (or Individuals) do not own the physical infrastructure of their IT department. Instead, Cloud Computing allows them to rent the resources. Small and medium sized businesses – the group Cloud Computing seems to be most useful for – can pay only for operations necessities.
    • There are two broad models of Cloud Computing billing
      • a subscription model (like a magazine, a monthly or annual rate), or
      • a utility computing model, associating IT with a traditional utility services (such as electricity).
  • 8. Why Cloud Computing?
    • Essentially the individual control of local systems comes with a price. Companies not only invest in instillation, configuration, and updating with every release, but also in-house maintenance. Localized operating systems updates induce revisions to other local programs.
    • Cloud Computing offers an opportunity to outsource these problems and eliminate these issues. More over, Cloud Computing inherently means advantages in mobility, flexibility, and collaboration.
  • 9. Brief Overview of the Types (Layers) of Cloud Computing
    • SaaS (Software as a Service)
    • delivers software services whereby a third party licenses an application to customers as “service-on-demand” (ie. Salesforce *non-customized software)
  • 10.
    • PaaS (Platform as a Service)
    • delivers computing platform (middleware) over the Internet facilitating deployment of applications without buying or managing software (ie. Google AppEngine *writing your own software applications to solve an exact/user problem).
    Brief Overview of the Types (Layers) of Cloud Computing
  • 11.
    • IaaS (Infrastructure as a Service)
    • delivers an infrastructure over the Internet (“platform virtualization”) rather than purchasing servers, software, hardware, network equipment or components (ie. Amazon EC2 *Hardware as a Service) Expanding and contracting according to need.
    Brief Overview of the Types (Layers) of Cloud Computing
  • 12.
    • In general, it is assumed that “as a Service” indicates all services are fully integrated up to and including the respective level. SaaS providers either sub-contract to a PaaS provider, or incorporate the PaaS and providing it as a part of SaaS “stack.” In the same vein, the IaaS could be sub-contracted or incorporated. The customer would see an integrated service.
    Brief Overview of the Types (Layers) of Cloud Computing
  • 13. Brief Overview of the Types (Layers) of Cloud Computing
  • 14. For More Information
    • “ Cloud Computing,” by Brian Hayes, Communications of the ACM, Volume 51 Issue 2
    • “ A View of Cloud Computing,” Communications of the ACM , Volume 53 Issue 4
    • View this presentation at: