I’m doing a 5-4-3-2-1 method. 5 backups. 4 on-site. 3 attached to one machine, 2 of those are on separate external usb drives synced at different intervals. 1 in the shed.

Does that also include Burial?

Same. It’s pretty cheap, comes with unlimited free traffic and is just simple to use. Supports many ways to access it, including BorgBackup.

Can I (figuratively speaking) just change the destination in my backup scripts and start writing to Hetzner… or are they using a completely different setup?

tho hetzner storagebox is hit or miss. you can run into deadlocks from cifs mounts on servers with it