WSUS3

WSUS (Windows Server Update Services) is a Microsoft tool that allows you to provide Microsoft updates to your computers from a single interface. The new WSUS3 that was recently released provides the administrator with an MMC Console to manage all the updates for your computers. A WSUS Server downloads updates from Microsoft Update or from another WSUS server and then the client machines are forced to download the updates from the server via a Group Policy.

The Benefits of WSUS

• Save bandwidth, because only one machine downloads your updates and distributes them instead of each computer downloading updates individually.
• Save Time, because you manage all of your computers from one place instead of going from computer to computer.
• Better Security, with WSUS your control over the updates will be vastly improved and therefore your network will be more secure.

Improvements from WSUS2 to WSUS3

• MMC console instead of Web interface
  
• Better reporting tools
• More options and settings

Drawbacks of WSUS3

• You can't sync a WSUS3 Server with a WSUS2 server
• The MMC console is terribly slow over a WAN connection.
• There is no web interface, so you have to install the MMC snap-in and the Microsoft Reporting tool in order to manage your server from another computer.