I would look at the following (however, it depends on what your backup application is...):
As a pure appliance, I would look at HPE StoreOnce, Exagrid, and even Pure flashblade.
A lot will be based around the cyber and ransomware presence which is growing dramatically all the time.
All main vendors need to provide well-integrated hybrid options based on on-premise and cloud immutability with good capabilities to analyse backups for potential…