I first got into contact with this notion at the SoCraTes conference in 2012 when Benjamin facilitated not one, but two sessions. Unfortunately then I could not have attended as I was too tired from the sessions I had facilitated.
Last year I met again Benjamin at the XP Germany conference. Then I really attended his session. You can read more about that here.
We (mostly my brother Alex) decided to bring this Architectural Kata to the Bucharest community. And last week we had the first one.
The main idea behind this concept is that you cannot be a good architect if you do not have the experience. If you are an architect you create maybe 10-15 systems in your life, so that is surely not enough to be a good one. So with this session we do a repetitive exercise of creating architectures for some requirements.