Helps you save bandwidth and time
Only one machine downloads the windows updates and stores the updates locally. This creates an option for you to have other machines that need updates to just to go to the WSUS rather than downloading the updates individually.
Simplify the process of making sure your computers are healthy and up to date
WSUS is designed to greatly simplify the process of keeping computers in your organization up to date with the latest critical updates, security updates, and service packs. The updates can be synchronized from the live Windows Update servers and saved on the WSUS server.