https://arstechnica.com/gadgets/2023/02/microsoft-officially-blesses-parallels-as-a-way-to-run-windows-on-m1-m2-macs/

In the absence of a version of Boot Camp that runs on Apple Silicon Macs, the best way to run Windows on them has been to use a virtualization app like Parallels or (more recently) VMware Fusion. The problem is that, until now, the Arm version of Windows that runs on Apple Silicon Macs hasn't technically been allowed to run on anything other than Arm PCs that come with it due to Microsoft's licensing restrictions.

These licensing problems haven't technically stopped people from running the Arm version of Windows on other hardware, including Apple Silicon Macs and the Raspberry Pi, but it could be more of an issue for IT managers who wanted to deploy Windows on Macs without worrying about legal liability.