I assume they mean the standard practice of encrypting your backups with per-customer encryption keys. If you ever want to destroy all of the data for a particu

I assume they mean the standard practice of encrypting your backups with per-customer encryption keys. If you ever want to destroy all of the data for a particular customer you don't have to do any editing of backups, you just have to nuke every copy of the encryption key you use for that customer.