Microsoft Rethinks Its Office 2007 Server Line Up: "But the big kahuna on the Office Server 2007 side is Office SharePoint Portal Server 2007. That offering will combine Microsoft's current Content Management Server, SharePoint Portal Server and what was expected to debut as a standalone Excel Server into a single product. Until quite recently, Microsoft was using the name 'Office Server' to refer to Office SharePoint Portal Server 2007, company officials acknowledged.
SharePoint Portal Server 2007 will act as a backend for a variety of new client-based Office services. It also will incorporate a variety of workflow engines, designed to mesh with Windows Workflow Foundation, the next-generation Windows workflow technology that Microsoft is baking into Windows Vista, Longhorn Server and other future Windows releases."