A similar tool is Tailscale SSH. They replace SSH keys, which are clunky to distribute and invalidate, with the same authentication mechanisms you use for the rest of your digital security.

A great use case in the enterprise is wrapping old but mission critical systems that don't support modern encryption or authn requirements with WireGuard. SSH is a demo for that use case- there's a lot of proprietary TCP data protocols out there in the legacy enterprise world!