Overview and analysis of cloud computing research and application

After the concept of Cloud computing-the Revolutionary development and progress in IT industry — was born in Google, the IT software and services vendors, universities, enterprises, etc, join in the process of research and application of cloud computing. This paper firstly aims to the current cloud computing research and application and analyzes the characteristic of cloud computing. The powerful cloud computing ability helps the enterprises adopt IT ERP software and reduce cost and investment in hardware-software. Then mainly focuses on the software as a services (SaaS), platform as a services (PaaS) and infrastructure as a services (IaaS) that cloud computing-based on. Software on-demand changes the pure SaaS model to PaaS/IaaS. Pay-Per-use and on-demand is the megatrends in the future software model, especial ERP software model.