Personally for backups I’d avoid using a product provided by the same company as the VM I’m backing up. You should be defending against the individual VM suffering corruption of some kind, needing to roll back to a previous version because of an error you made, and finally your VM provider taking a dislike to you (rationally or otherwise) and shutting down your account.

If you’re backing up to a third party losing your account isn’t a disaster, bring up a VM somewhere else, restore from backups, redirect DNS and you’re up and running again. If the backups are on a disk you can’t access anymore then a minor issue has just escalated to an existential threat to your company.

Personally I use Backblaze B2 for my offsite backups because they’re ridiculously cheap, but other options exist and Restic will write to all of them near identically.