Cloud computing is the emerging buzzword in information technology. It is growing day by day due to its rich features of services. It is a virtual pool of resources which are provided to the users through Internet. Cloud computing is a new flavor of computing where the authors' trend of using Internet changes. It is the future of Internet. It is also called as fifth generation of computing after mainframe, personal computer, client-server computing, and the web. Now-a-days, various Internet services are available in distributed manner.