Servers take three months to arrive and parts take six. Does this solve that?

Yes. Because you buy no physical server, there is no waiting for delivery and no waiting for parts.

Your customer’s environment is prepared as an Azure Virtual Machine (Windows Server). There is no equipment to order, install or repair. You can finally stop lending out old servers as a stopgap.

Preparing for failure changes too. Hardware maintenance and replacement are handled by Microsoft’s data centre, so you never have to hunt for a part again.