Cloud Computing is the advantageous future of 2009. where everyone will be aware of this upcoming trend of computing. Actually Cloud computing is a style of computing that characterizes a model in which providers deliver a variety of IT-enabled capabilities to consumers. They key characteristics of cloud computing are delivery of capabilities “as a service,” delivery of services in a highly scalable and elastic fashion, using Internet technologies and techniques to develop and deliver the services, and designing for delivery to external customers.

Although cost is a potential benefit for small companies, the biggest benefits are the built-in elasticity and scalability, which not only reduce barriers to entry, but also enable these companies to grow quickly. As certain IT functions are industrializing and becoming less customised, there are more possibilities for larger organizations to benefit from cloud computing.