Businesses are almost entirely dependent on cloud based storage solutions as opposed to in-house, on-premise local storage equipment. Are you sure it's safe?
If your file storage is setup right, then you can get a feature called File Versioning, this is where each time you save the file, a copy is taken. The upshot of this is that you can go back to any single version you've ever saved.
Cloud backups are now very common, But many people don't realise they're backing up to a server somewhere else in the world, and they don't know where.
