Cloud computing model, based on cloud technologies, is an evolution to traditional computing model. It fully separates device, operating system, application and user data from each other while freely combines these components to form different computing paths. In cloud computing platform, storage cloud, desktop cloud and application cloud are built in the backend, while user data, operating systems, and applications are deployed in the data center. Therefore, user only needs to focus on data, and is able to access, process and share data with any device, from anywhere and at anytime.