Review of Cloud Computing Research Based on Technology and Business View

Cloud Computing is a new application model for distributed computing that can provide reliable,customized and maximum number of users with minimum resource. It not only changes computing techniques,but also impacts the business model. Considering that cloud computing is a virtual,shared,and new business model,this paper summarizes cloud com- puting concept and analyzes the architecture of cloud computing,compares cloud computing architecture with deployment model,and summarizes related research about relationship of service and architecture of cloud computing. In the meantime we analyze the cloud computing characteristics and discuss its advantages,problems,and the trends. The paper also de- scribes how cloud business model impacts the enterprise business model to enhance the competitiveness of enterprises. We also present a summary of the current state of the art of cloud computing and the discussion on the future research topics and some crucial problems which should be solved pressingly.