In IIS 10.0, we introduced the IISAdministration PowerShell module which was a new way to manage IIS. This module included numerous improvements over the existing WebAdministration cmdlets.
Unfortunately, folks who hadn’t updated to Windows Server 2016 weren’t able to take advantage of the new management cmdlets until now. I’m pleased to announce that we’ve now released this module to the PowerShell Gallery and is available for use on Windows Server 2012 and above.
Source : IIS Team Blog
