说明：  本书是介绍云计算的，云计算是基于互联网的相关服务的增加、使用和交付模式，通常涉及通过互联网来提供动态易扩展且经常是虚拟化的资源。云是网络、互联网的一种比喻说法。过去在图中往往用云来表示电信网，后来也用来表示互联网和底层基础设施的抽象。因此，云计算甚至可以让你体验每秒10万亿次的运算能力，拥有这么强大的计算能力可以模拟核爆炸、预测气候变化和市场发展趋势。用户通过电脑、笔记本、手机等方式接入数据中心，按自己的需求进行运算。
(This book is an introduction to cloud computing, cloud computing is based on the increase in Internet related services, the use and delivery models, usually involved in the Internet to provide dynamic and easy to expand and often is the virtual resource. Cloud is a metaphor for the Internet, the internet. In the past in the picture is often used to represent the telecommunications network, and later also used to represent the Internet and the underlying infrastructure of the abstract. Therefore, cloud computing can let you experience 10 times per second computing power, with such a strong computing power can simulate nuclear explosions, predict climate change and market trends. The user through the computer, laptop, mobile phone and other access to the data center, according to their own needs.)