I'd say there's an even better distinction: backups keep your data safe even if you manually delete it. With only redundancy if you delete a file it's gone. Wit

I'd say there's an even better distinction: backups keep your data safe even if you manually delete it. With only redundancy if you delete a file it's gone. With a backup, it's still in the last backup. Of course there's usually some maximum retention period for backups, but that can get quite long. Everything else is secondary and can be covered by both. The chance of your redundant data center burning down at the same time as your primary is also low. If one burns down, you just bring up another. Likewise for smaller-scale users, where the chance of your cloud provider being down when your house burns down is also incredibly low. So it's really the versioning or snapshot nature that's the key aspect of backups as opposed to simple redundancy.