Investigation of Overall Architecture,Applications and Business Models of Cloud Computing

Cloud computing has a new IT architecture and the flexibility to provide services to the different needs of users.On the basis of research on cloud architecture,it is pointed out that the cloud structure is divided into two parts,and detailed analysis is done on services and management of the key technology of SaaS(software as a service),PaaS(platform as a service) and IaaS(infrastructure as a service) as well as its realization,and management part of the client layer,the functional layers of management and monitoring layer architecture and function.Finally,the specific cloud computing architecture is given,combining application of four business models for cloud applications,public cloud,private cloud,the industry cloud and mixed cloud.Some directions can be given through the cloud service provider-oriented operation.