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Re:Introducing PackageManagement in Windows 10 by stephengillie on Wednesday April 29, 2015 @04:01PM (#9461296)
WSUS just caches updates locally, so you can download once and have the WSUS server distribute copies to your forest.

It's a GPO that points your domains to the WSUS server. And I've only used Octopus to automate WU installs.

Re:Introducing PackageManagement in Windows 10 by mhurron on Wednesday April 29, 2015 @04:48PM (#9461656)
> WSUS just caches updates locally

New updates do supersede others though, if they're marked to do so from Microsoft. That should cover at least some of the .Net point release updates and the like.