The whole point of it is to run Windows VMs on a Mac. This is the most valuable feature. There is snapshotting, but we don't really use that.
The Pro version allows me to actually attach to the Windows ESXi infrastructure at the backend, and I'm able to create a session that I can attach to the VMware hooks at the backend, so one is running a VM, and the whole operating system is running on the actual Mac. The other one is literally a frontend to the VMs that are running in the infrastructure at the backend. These are the two main features I use.