Relationship
Between Microsoft Windows SharePoint
Services (WSS) And Microsoft SharePoint
Portal Server (SPS)
WSS is the “foundation” with its document libraries and lists, versioning, check-in and check-out, alerts, web parts, shared calendars and discussions
SPS builds on top of WSS providing a number of tools for
deployment and management
SPS also provides cross sites/organizations functionalities and tools as well as access to various integrations