nano computing - impact factor:  Cloud is an extend of grid computing, distributed computing, and parallel computing where everything will be serving as service. Information Technology is migrating to cloud computing as it is diminishing their capital investment, data centre space and also helps them to concentrate mainly on their resource utilization activities as cloud computing provide resource as a service to their customers not as a product or software. The fundamental Concept of cloud computing is that the computing is “in the cloud” nano computing - impact factor:  Cloud is an extend of grid computing, distributed computing, and parallel computing where everything will be serving as service. Information Technology is migrating to cloud computing as it is diminishing their capital investment, data centre space and also helps them to concentrate mainly on their resource utilization activities as cloud computing provide resource as a service to their customers not as a product or software. The fundamental Concept of cloud computing is that the computing is “in the cloud”