WSUS Features
Server-Side Features
Updates for Windows, Office, Exchange Server, and SQL Server, with additional product support over time
Specific updates can be set to download automatically
Automated actions for updates determined by administrator approval
Ability to determine the applicability of updates before installing them
Targeting
Replica synchronisation
Reporting
Extensibility
Client-Side Features
Powerful and extensible management of the Automatic Updates service
Self-updating for client computers
Automatic detection of applicable updates