Great tutorial. Clear, understandable. I haven't tried it myself yet, but it seems straight forward.  The only thing that could make this better would be bringing up what snafus we might get hung on.

I do have 2 Questions:
1: Any chance on getting a tutorial on accomplishing this through FreeIPA? I'm looking into that for my job, but there is a whole lot that still goes over my head, and I learn more by sight and doing than reading. And the FreeIPA docs are quite long, and extensive, and DRY.

2: You said there was a wiki for 18.04 on Ubuntu Wiki.  But does this method you have work on that distro? I saw some comments on youtube about the success on 20.04

Actually a third question…

for the method shown above, How might one migrate an existing account to BIND to an AD entry. so if a user had an existing local account, they would not have to go through the pain of re setting up their AD bound account

Worked fine on 18.04.4 as well

Does this process work on Ubuntu 20.04?