This paper starts from the Google App Engine (GAE) and makes deep analysis and study of its datastorage technique (Bigtable).And on this basis

aprototype system is designed and implemented

which Based on the object-oriented thought

using the Struts+Spring+Jsp development framework

using the Google App Engine development technology.By developing the prototype system as well as deploying and testing of the cloud

we analyze the performance of the prototype system.On this basis

put forward the suitable for the characteristics of SaaS software developed by cloud platforms and the problem should pay attention in the development process and present the authors view that

in the early stages of the development of cloud computing

in the cloud is only suitable for development and deployment of high scalability based on request/reply does not involve multiple tables associated with simple Internet application system

storage system and the intelligent decision-making system need high efficiency calculation.