Cloud computing is transforming from concept to reality and its wide application is just around the corner. In this paper, we will take web group application as the subject and explore ways to apply cloud computing method into supporting government and enterprise's websites, and we seek to build a Web technology-supporting environment in two aspects so as to meet the requirements of web group application. Firstly, we will build a cloud computing platform via the model of PaaS (Platform as a Service). And we will build web content management software via the model of SaaS (Software as a Service). Secondly, we use public and private cloud environments, protect information security of the web group. In this way, it can maximize efficiency, reduce costs, and meet the enterprise network information communication needs more conveniently and with more flexibility.