SharePoint是微软制作的一款用于Windows Server 2003的免费附加（增值）软件，它提供基本的门户网站和企业内网功能。它包括由web部件（由ASP.NET开发）组成的叫作web 部件页面的门户页面、团队站点、文档库以及项目子站点，带有版本控制的文档存储空间、以及基本的搜索功能。它的前端是一个运行于Internet Information Services 6.0之上的ASP.NET网站，后端由SQL Server或者MSDE来存储数据。

Windows SharePoint Services同时也是Microsoft Office SharePoint Portal Server和Microsoft Office Project Server的基础。Office SharePoint Portal Server是Windows SharePoint Services的企业版，并不像WSS一样是免费的。

SharePoint is a web application platform in the Microsoft Office server suite. Launched in 2001, SharePoint combines various functions which are traditionally separate applications: intranet, extranet, content management, document management, personal cloud, enterprise social networking, enterprise search, business intelligence, workflow management, web content management, and an enterprise application store. SharePoint servers have traditionally been deployed for internal use in mid-size businesses and large departments alongside Microsoft Exchange, Skype for Business, and Office Web Apps.