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The current discussion about cloud computing is still in its early stages and we have a long journey ahead. This cloud computing provides information model for enabling convenient, on demand network access to shared pool of configurable computing resources(e.g. networks, servers, storage, applications and services). This can be rapidly provisioned and released with minimal management effort or service provider interaction. [1] Cloud computing emerges as one of the hottest topics in the field of information technology. Its research work is based on several other computing areas such as High Performance Computing (HPC), virtualization, utility computing and grid computing. The cloud computing has its own conception, technical, economic and user experience characteristics. Clear insights into cloud computing will help the development and adoption of this evolving technology both for academe and industry.