This article shows how to use a static public IP address in Windows 365.
At first, on Mar 2022, Windows 365 doesn’t provide any way to assign a static IP address to your Windows 365. But for Windows 365 Enterprise, you can realize this by using Azure Network Service.
Windows 365 Enetrprise have two network options. One is Microsoft Hosted Network. Another is “On-premise network connection. When you use “On-premise network connection,” you can realize it by NAT Gateway and Azure Firewall.