Cloud computing offers IT organizations with a diverse model of operation;and there are many advantages of cloud computing such as the maturity of networks, web applications, and the increasing of interoperability to provide IT services of computing systems. Cloud computing provides a particular services and applications as well as with expertise which allows them to manage their maintenance, backups, disaster recovery, upgrades, and fail over functions. As a result, customers of cloud services can see the rising of reliability, even as costs rise due to economies of scale or other factors. With cloud computing, companies can observe current needs and make modifications of capacity to increase or decrease in demand to avoid paying for unused capacity through slower times.