Microsoft Office SharePoint Server (MOSS) sits on top of WSS and adds additional features, both to the underlying WSS layer, as well as additional ways for the end-user to interact with the repository. The data resides in a SQL Database. Using Web parts it can then present this information to the user using a wide range of different modules and for interaction in different business scenarios. These include such diverse applications as Collaboration, Document management, Records Management (including DOD 5015.2 certified components), Workflow, Personalization, more complex metadata models as well as Blogs and Wikis from the Web 2.0 side.
Organizations can deploy and manage SharePoint Server on-premises or with an Office 365 Enterprise subscription to take advantage of all the latest features. And it offers additional features and capabilities, such as modern site pages, modern web parts and authoring, modern lists and libraries, modern search, integration with PowerApps, Power BI and MS Flow, and SharePoint home page.