Cloud Computing for Persistent Systems

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Basics of Cloud ComputingBy Kedar Deshpande

What is Cloud Computing?Cloud is simply a metaphor for the internet Users do not have or need knowledge, control, ownership in the computer infrastructure Users simply rent or access the software, paying only for what they use

History of Cloud Computing Concept dating back to the 1960s by John McCarthy, a computer scientist, brought up the idea that "computation may someday be organized as a public utility Idea that revolutionized Cloud Computing: Moving from clustering computing to grid computing Clustering Grid

In some ways, the cloud is a natural next step from the grid-utility gridmodel, said Frank Gens, an analyst at the research firm IDC

Early Leaders in the Industry In 2007, Microsoft made available free software, www.live.com that connects its Windows operating system to software services delivered on the Internet Launched in July 2002, Amazon Web Services provided online services for other web sites or client-side applications client 3tera launched its AppLogic system in February, 2006 IBMs system introduced in the mid 2000s is called Blue Cloud

Functionality Cloud computing is an emerging technology that is revolutionizing IT infrastructures and flexibility, and software as a service (SaaS) During this economic time of recession, there are huge cost-reduction costpressures and cloud computing allows businesses to do just that by tapping into cloud computing platforms on a pay-as-you-go basis pay-as-you Customer retention is vital, especially today in our economy. Software and applications are extremely costly. With cloud, you rent so the heavy investment is forgone Cloud computing is a set of technologies and business practices that enable companies of all sizes to build, deploy, monitor and scale applications using resources accessed over the internet

What Technologies is Cloud Computing Replacing Cloud computing is replacing large Corporate Data Centers and unnecessary, expensive private server infrastructure. Web 2.0, SaaS, Enterprise and government users are adopting cloud computing because it eliminates capital investment in hardware and facilities as well as reduces operations labor.

Scalable Pricing and Cloud Computing Models of Pricing Free Subscription Model Pay Per Use Perpetual License Enterprise Unlimited License

What do these Services Offer an Organization? Cloud computing will lead to increase in the following categories: Virtualization Usability Standardization Scalability

Cloud Computing Pros Reduced Hardware equipment for end users Improved Performance Lower Hardware and Software Maintenance Instant Software Updates Accessibility Less Expensive (Amazon example) Better Collaboration Pay for what you use Flexible

Cloud Computing Cons Security Issues Internet connection Too many platforms Location of Servers Time for Transition Speed

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