Hi,
Regarding on connect WAC to Azure for the management of Azure VM, below are some useful articles consists of step by step guidance and optional features that can be integrated with Azure.
1.Windows Admin Center supports several optional features that integrate with Azure services. Learn about the Azure integration options available with Windows Admin Center.
https://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/azure/
2.Connect Windows Admin Center to Azure
https://thesleepyadmins.com/2020/05/23/connect-windows-admin-center-to-azure/
3.Use Windows Admin Center in the Azure portal to manage a Windows Server VM
https://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/azure/manage-vm
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny