SharePoint is a web-based collaborative platform that integrates with Microsoft Office. Launched in 2001 SharePoint is primarily sold as a document management and storage system, but the product is highly configurable and usage varies substantially among organizations.
SharePoint Server is provided to organizations that seek greater control over SharePoint's behavior or design. This product is installed on customers' IT infrastructure. It receives fewer frequent updates but has access to a wider set of features and customization capabilities. There are three editions of SharePoint Server: Standard, Enterprise, and Foundation (free) which was discontinued in 2016. These servers may be provisioned as normal virtual/cloud servers or as hosted services.