This was discussed in the thread a couple days ago about board game rulebook design. I had a similar question (https://news.ycombinator.com/item?id=42302038 - although I phrased it more like wondering if Procida had been ripped off) and got some insightful replies.

In short: it looks identical because it's substantially his work, that he did while employed there. In fact, he's the one giving the talk in the PyCon Australia video there.

Thank you.

Explained in https://diataxis.fr/colophon/#origins-and-development. No malfeasance! But I wish Divio would take that down, it's past its sell-by date now, and I think I got quite a few things in it wrong.

I actually find the contrasting approaches (see discussion elsethread about the terminology used in the diagram) helpful and it's always good to have historical context.

I agree that the Divio site would be well-served by directing folks to/acknowledging the newer site (as the newer site does).

Same guy