Cloud computing is where data, software applications or computer processing power are accessed from a cloud of online resources. This allows individual users to way in their data & applications from more than a few devices as well as allowing companies to decrease their capital costs by purchasing hardware and software as a utility service. It is one of the fastest emerging paradigms in the area of information technology. It refers to the delivery of computing resource over the internet. Instead of you using your own computer hard drive or updating business applications for your needs, you use a service over the internet, or at another location to store your information. It provides shared pool of resources, including data storage space, networks, cooling and computer processing power & specialized corporate and user applications.
(Cearley, 2010) Gartner defines Cloud Computing a style of computing where massively scalable IT-enabled applications are delivered ‘as a service’ to external customers using Internet technologies.
(Wink, 2011) defines Cloud computing is the use of a computer other than the one you are actually working on to store or access software, data, and/or computing power (e.g., processing speed, memory, or computational ability.
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