Status and key techniques in cloud computing

Cloud computing is another buzzword and the latest effort after Web 2.0. It is a technology that access remote servers through Internet to maintain data and applications. Whilst cloud computing developes into a major trend in IT industry, academic research has recently joined. This paper compared existing definitions of cloud computing and gave personal opinion. The case of mainstream cloud computing platforms were introduced in helping to understand what´s the cloud computing and then key techniques were analyzed. It also talked about the simulator-cloudsim and some aspects to be improved. The paper strives to describe the current status of cloud computing as well as its broad development prospects.