A couple of other solutions that I came across are:  1) Nakivo &  2) Metallic (acquired by Commvault) the former being on the cheaper side. *I am not here for marketing any product but they are $@.75/user/month for a 3-year subscription You still need to have your own cloud…

Personally, I have used Barracuda and Acronis and both have fair amount of features as needed to protect an M365 environment The former has flat user-based licensing with unlimited capacity but the latter has an additional capacity license on top of the user license (so you…

Yes indeed. Avamar grid can be used as storage itself to store its own backup.  You can even use a virtual appliance with the required storage capacity. There are defined appliance sizes so you may choose one depending on your data size.

Out of the box root level migration between Avamar appliances. Currently, you have involve Professional services for such a migration. Only client level replication/migration is possible by oneself which shows the replicated backups under Replicate tree.