Moreover, virtualisation makes it much easier to add new servers or storage devices. Alternatively, firms can simply rent extra capacity from operators of what are called “computing clouds”, such as Amazon Web Services. That outfit has built a network of data centres in which virtual machines and disks can be launched in seconds. As a result, IT systems will increasingly no longer be a capital expense（注2）, but an operational cost（注3）, like electricity.
基于1个网页-相关网页
Public computing clouds are open to anyone who wants to sign up and use them.
公共计算云面向任何希望登录到其中并使用它们的用户。
For one, operators of computing clouds such as Amazon and Google have shown that this is a far more efficient way of running IT systems.
一方面，云计算的提供商们比如amazon和Google已经证明云计算是运营it系统更有效率的方式。
And now there are computing "clouds" and mobile devices.
现在有“云”计算和移动设备。
应用推荐