I recently came across an extremely useful PowerShell script to manage images and extensions within the Azure Stack marketplace thanks to this post by Kris Turner: https://kristopherjturner.com/2018/12/14/azure-stack-marketplace-management-powershell-script/
This script will download all current Microsoft virtual machine extensions from the marketplace. It also downloads Ubuntu Server and Windows Server images as well. Once all have been downloaded, it will compare versions and prompt you to remove older versions if desired.
blueflashylights.com 