CmdID / PowerShell / Cmdlets / Stop
Stop-IISSite
Stops an IIS Web site. Windows Server PowerShell reference
From the Windows Server PowerShell reference 4 parameters Its page in the reference
Parameters
-NameSpecifies the name of the IIS web site.-PassthruReturns an object representing the item with which you are working.-Confirm, -cfPrompts you for confirmation before running the cmdlet.-WhatIf, -wiShows what would happen if the cmdlet runs.