As per https://learn.microsoft.com/en-us/answers/questions/1281838/how-to-configure-a-licence-for-a-single-windows-11 and https://learn.microsoft.com/en-us/answers/questions/1161652/azure-virtual-machine-which-license-to-use-for-pri
How do I license a single instance of Windows 10/11 on Azure?
Unlike Windows Server which includes the OS cost with the VM, Windows 10 and Windows 11 require that you bring your own license that can be used in a cloud environment. For production environments, this means a multitenant license found in specific enterprise and other licenses listed here:
You could use an Enterprise E3/E5 license for deploying Windows 10/11 on Azure however if this is for personal, development, or test purposes, you can use Windows client images in Azure which may be more accessible for individual use through a Visual Studio subscription as well as other offers as listed here:
https://learn.microsoft.com/en-us/azure/virtual-machines/windows/client-images
hth
Marcin