Abstract
With a crucial development of information and communications technology over the last century, there is an increasingly perceived vision that computing will be the 5 th utility in human's civilization. Like all other four existing utilities, this computing utility will provide basic level of computing service which is considered essential to meet everyday needs of the general community. In order to deliver this vision, a number of computing paradigms have been proposed, of which the latest one is known as Cloud computing. Therefore, in this paper, we introduced the definition of Cloud computing and provide the architecture for creating Clouds with market-oriented resource allocation by leveraging technologies. We also provide a hypothetical case analysis to show the economical efficiency for medium-sized enterprise to deploy servers on the cloud instead of establishing server center of their own. Finally, a conclusion is drawn that there is need for convergence of competing IT paradigms to deliver our new century vision and it is economical efficient for medium-sized enterprise to use cloud computing services.
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