Not only has it made the traditional architecture extend from LAN to the Internet, but also broken through the limitations of such traditional modes as C/S, B/S, making the automated system of information service more meticulous and more flexible and showing much more advantages over traditional distributed architecture. At present, the development of cloud computing in the area of automation of information service is still resting on the stage of definition and how much the users benefit from cloud computing or how to benefit from it still needs the long search of the whole industry.