A Survey on Cloud Computing

hosts computing services in centralized places called datacenters and provides access to them through Internet. Cloud computing is very usable, like we have cable tv on which channel request can be made on demand. Data amount on cloud is instantly extendable to any volume, and charged according to use, with the service provider managing every aspect of the service except the device used to access it. In this paper we are explaining what is cloud computing, its functional and technical characteristics, need of cloud computing and its services