Was looking for this feature in Proxmox and found it only exists for backups. Would love to be able to schedule vm snapshots and define retention from the gui.
Tbf hole in the market, aslong as there is no plugin and no official way to do it. And look it it this way.. There is an rest api!! Dude tons of money to be made. Personally do not have time for this with my job but its easy to implement, and hard to master for the client so double win, they pay for the software and for the support.
Everyone is migrating from VMware (Couch... Broadcom.. sry..) at this time to anything close to it featurewise, and proxmox is one of the best alternatives. Managers don't care about "oh its not backup" (very true) but downtime is minimal and the data is recovered after a failed action in seconds! Hero of the day (or evening since changes do not go well with end users during the day ).
People pay good money for this simple snapshot feature which is already in there just not automated :') at least not commercially, I mean I have it scripted and so can anyone else.