The principle objective of this article is to discuss about Cloud Deployment Models. which is very important for us. Cloud computing services create of cloud computing models that propose services directed to exact group of people concerned. A personal cloud computing service is planned to serve individual organizations. This service may be managed internally by the cloud computing service supplier or by some additional party existing outside and hosted superficially.These can be classify into four key categories Private, Public, Community and Hybrid. Finally here explain about four categories.