I want to apply security updates exclusive of other Windows patches on demand. I have installed DSC. I don’t know that DSC is even necessary. What is the command to apply security updates on Windows Server 2012 R2?
There isn’t one built in to PowerShell or Windows Server
Server 2012 R2 has a WSUS module for managing a WSUS server
For managing patch installation I use the PSWindowsUpdate module from the PowerShell gallery