Microsoft has had two different iterations of on-prem Azure. The TL;DR is that you’d buy a full rack of hardware from them and you could manage it using Azure front end.
The first iteration was a miserable failure. The second was a heavy lift to install: Previous employer was an Azure customer and actually bought the hardware. It then took months to get it installed and working, at which point the appetite for that capability was gone.
The first iteration was a miserable failure. The second was a heavy lift to install: Previous employer was an Azure customer and actually bought the hardware. It then took months to get it installed and working, at which point the appetite for that capability was gone.