Cloud computing and the many types of public cloud computing

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　　云计算是使用的计算资源（硬件和软件），通过网络（通常是互联网）作为服务。这个名字来源于作为一个抽象的概念，它包含了复杂的基础设施系统图的云形符号的使用。云计算依赖远程用户的数据，软件和计算服务。

Cloud computing is the use of computing resources (hardware and software) that are delivered as a service over a network (typically the Internet). The name comes from the use of a cloud-shaped symbol as an abstraction for the complex infrastructure it contains in system diagrams. Cloud computing entrusts remote services with a user's data, software and computation.

公共云计算：基础设施即服务（IaaS）平台即服务（PaaS）软件作为一种服务（SaaS）存储服务（STaaS）安全作为服务（SECaaS）数据作为一种服务（DAAS）测试环境作为一种服务（TEaaS）桌面作为一种服务（DAAS）API作为服务（APIaaS）

There are many types of public cloud computing:
• Infrastructure as a service (IaaS)
• Platform as a service (PaaS)
• Software as a service (SaaS)
• Storage as a service (STaaS)
• Security as a service (SECaaS)
• Data as a service (DaaS)
• Test environment as a service (TEaaS)
• Desktop as a service (DaaS)
• API as a service (APIaaS)