- Branch office framework
 
 - Completely redesigned Distributed File System that is more scalable than its predecessor, File Replication Services.
 
 - Remote Differential Compression.
 
 - Print Management Console with new richer view of network printer toplogy.
 
 - Enhanced DFS Namespaces UI
 
 - File Server Resource Manager
 
 - Active Directory Federation Services to share identity over federation trusts.
 
 - Active Directory Application Mode
 
 - Windows Sharepoint Services v2 SP2
 
 - .Net Framework v2
 
 - MMC 3.0 with relibaility enhancements and Whidbey snap
 - in authoring.
 
 - Subsystem for Unix Applications 
 -  Interix Subsystem.
 
 - Unix Identity Management with AD & NIS interoperability.
 
 - Network File System with Unix interoperability.
 
 - Quota Management with directory quotas, storage reports, and file screening.
 
 - Simple SAN Management which allows easy setup and management of simple SAN configurations.
 
 - Common Log File System with ARIES logging support.
 
 - New roles : Sharepoint, File Server Role, and Print Server
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