The 3-2-1 backup rule, in plain English

Keep 3 copies of anything you can't afford to lose, on 2 different types of media, with 1 copy off-site or in the cloud. Microsoft 365 and Google Workspace are NOT a backup — they protect against their own outages, not against you or an attacker deleting things. Add a dedicated backup for your email and files.

Coach's tip: a backup you've never tested is a wish, not a backup — do a test restore twice a year.