.NET开发十大常用工具软件分享

Cloud computing is Internet- ("cloud-") based development and use of computer technology ("computing").[1] In concept, it is a paradigm shift whereby details are abstracted from the users who no longer need knowledge of, expertise in, or control over the technology infrastructure "in the cloud" that supports them.[2] Cloud computing describes a new supplement, consumption and delivery model for IT services based on Internet, and it typically involves the provision of dynamically scalable and often virtualized resources as a service over the Internet.[3][4]
以上内容来自Wikipedia，http://en.wikipedia.org/wiki/Cloud_computing

Cloud 的layer主要包括以下几个：client、application、platform、 infrastructure、servers。
cloud的types主要分为以下几个：public cloud（such as amazon、google、microsoft‘s azure）、hybrid cloud、private cloud。
cloud的服务类型主要分为以下几个：Infrastructure-as-a-Service (IaaS，such as Amazon Web Services )、Platform-as-a-Service (PaaS，such as Google Apps)、Software-as-a-Service (SaaS，such as twitter)、Cloud Service Level Agreements (SLAS)。
cloud的主要特点是：Virtualization and automation、Interchangeable (fungible) resources such as servers, storage and network、Management of these resources as a single fabric、Elastic capacity (scale up or down) to respond to business demands、Applications (and the tools to develop them) that can truly scale out、Focused on the service delivered to the business。

本文出自 “ShawnShi的IT世界” 博客，请务必保留此出处http://shawnshi.blog.51cto.com/1749677/335814