[nrawe]

This isn’t really new. Architecture Definition Documents like this have been around for a long time.

All the same, it’s great to see the approach being promoted because there’s a very real need for ADD’s to exist.

[zorg42]

Right you are, it's definitely not new.

arc42 has been used in practice since 2004. The newest version 8.0 has been released Febr. 2022.

We incorporated user feedback (plus our own experience in real-time, embedded, data warehouse and e-commerce systems)..

(I'm one of the authors of arc42)