[justsomehnguy]

This is the way.

I don't use it for home services (I don't have any), but use it in production for a couple of businesses for a decade.

Another advantage of this solution is what you can have ANY Internet connection, even 3G/4G/99G (and switch between your connections), your clients would still have the same IP to connect.

With a proper provider and configuration you can even host MS Exchange there.