How does one become a PH Ambassador (asking for a friend haha)

I've taken some time off of PH (tried to maintain my streak) and am really getting used to the new UI and feel of the platform as I jump back into high volume (hopefully high quality) engagement - I presume the overhaul is something I'll be used to really soon.

Curious - for those of you in the know - how does one get that illusive ambassador tag. Again like I said - asking for a friend.