在计算机技术中应用“云系统“有很多意义。与其购买昂贵的设备和维护自己的机器，为何不利用互联网中啜手可得的服务器呢？
例如，一些应用程序的代码和数据都可以应用云技术，有专人负责管理和维护这些应用程序所使用的系统。
另外，运行在网络系统当中的应用程序可以把数据存储在“云系统”中，或者使用“云系统“中提供的一些系统服务。运行在单机或移动设备上的应用程序也可以应用“云系统“来和其他应用程序进行信息的同步。如果这一切成为现实，“云系统“的能力将改变我们的世界。
但是一个应用程序是否能够在“云系统“中运行，或是使用“云系统“的服务，给这个应用程序建立必要的平台是必需的。广义上说，一个应用程序平台应当满足开发者创建应用程序所有的要求和服务。实际上，windows是一个网络软件世界。例如，像.NET Framework, SQL Server.要对应用程序应用“云系统“，“云系统“就应当提供这个应用程序运行的平台。对于应用程序使用“云系统“中的服务有很多方式。在不同情况下应用不同的“云系统“平台服务。
Microsoft’s Windows Azure platform 是一组应用在“云系统“中的技术组成的平台，为程序开发者提供相关的服务。
Microsoft’s Windows Azure platform 既可以运行在“云系统“中，也可以运行在本地系统中。 Windows Azure platform 为在“云系统“中运行的程序，数据，软件架构提供支持
Windows Azure platform 的组件包括
Windows Azure:为应用程序提供windows运行环境，把数据存储在微软数据中心
SQL Azure:为在“云系统“中的数据服务提供SQL Server
.NET Services:对于运行在“云系统“中的应用程序和在本地运行的应用程序提供基本的软件框架程序服务
WINDOWS AZURE提供"云系统“必要的计算和存储服务
windows Azure运行在很多台机器上，所有这些机器都在微软数据中心而且分布在互联网的不同地区。windows AZure fabric软件管理着这个巨大的网络。windows Azure的计算和存储服务就建立在windows AZure fabric软件上。 windows aZure platform
Using computers in the cloud can make lots of sense. Rather than buying and maintaining your own machines, why not exploit the acres of Internet-accessible servers on offer today? For some applications, their code and data might both live in the cloud, where somebody else manages and maintains the systems they use. Alternatively, applications that run inside an organization—on-premises applications—might store data in the cloud or rely on other cloud infrastructure services. Applications that run on desktops and mobile devices can use services in the cloud to synchronize information across many systems or in other ways. However it’s done, exploiting the cloud’s capabilities can improve our world.
But whether an application runs in the cloud, uses services provided by the cloud, or both, some kind of application platform is required. Viewed broadly, an application platform can be thought of as anything that provides developer-accessible services for creating applications. In the local, on-premises Windows world, for example, this includes technologies such as the .NET Framework, SQL Server, and more. To let applications exploit the cloud, cloud application platforms must also exist. And because there are a variety of ways for applications to use cloud services, different kinds of cloud platforms are useful in different situations.
Microsoft’s Windows Azure platform (originally known as the Azure Services Platform) is a group of cloud technologies, each providing a specific set of services to application developers. the Windows Azure platform can be used both by applications running in the cloud and by applications running on local systems. The Windows Azure platform supports applications, data, and infrastructure in the cloud.
The components of the Windows Azure platform include:
Windows Azure: Provides a Windows-based environment for running applications and storing data on servers in Microsoft data centers.
SQL Azure: Provides data services in the cloud based on SQL Server.
.NET Services: Offers distributed infrastructure services to cloud-based and local applications.
Windows Azure runs on a large number of machines, all located in Microsoft data centers and accessible via the Internet. A common Windows Azure fabric knits this plethora of processing power into a unified whole. Windows Azure compute and storage services are built on top of this fabric.
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