www.microsoft.com/office/preview/servers/sharepointserver
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Shared Services
Conceptually similar to Shared Services in SharePoint Portal Server 2003, the Shared
Services component has been completely restructured and redesigned in the Office
SharePoint Server 2007 using a new services provider model.
Shared Services include virtually all of the services that are used by multiple applications in
Office SharePoint Server 2007:
• Full-text and property indexing and search services
• Business Data Catalog
• Notification service for generating alerts
• User profile store
• Audiences
• Usage reporting
• Single sign-on services