I think I saw Oracle mentioned earlier, this has some info about the VSS integration. It's called 'Oracle VSS Writer': https://docs.oracle.com/database/121/NTQRF/vss.htm#BEIJJCAE

I guess MS-SQL does something similar, and that does seem useful beyond what LVM does.

Also VSS apparently can offload the snapshotting to a SAN ('VSS Hardware Provider'): https://docs.microsoft.com/en-us/windows-server/storage/file...