云计算是一种新型的计算模式，为用户提供计算和存储服务，是分布式计算、

并行计算、网格计算和效用计算相结合的产物。它意味着计算能力也可以作为一

种商品进行流通，就像煤气、水电一样，取用方便，费用低廉，最大的不同在于，

它是通过互联网进行传输的。云计算将互联网资源有效地整合在一起，采用虚拟

化技术，将物理资源和虚拟服务分开，提高了网络资源的利用率-Cloud computing is a new kind of calculation model, to provide users with computing and storage services, distributed computing,

Combination of parallel computing, grid computing and utility computing. It means computational ability to also can be used as a

Kind of commodity circulation, like gas, water and electricity, convenient use, low cost, the biggest difference is that,

It is transmitted through the Internet. Cloud computing will Internet resources effectively together, using the virtual

Technology of separate physical resources and virtual services, improve the utilization of network resources