Diataxis documentation framework

Today I learn of Diátaxis, a framework to write documentation by using a 4 layers approach:

• Tutorials
• How-to guides
• Explanation
• Reference

Most of this is oriented around product documentation but a lot of things resonate with education. I've already naturally explored some of the ideas (especially with "top-to-bottom" combined with "big-picture" approach for tutorials) but this framework is formalizing so much more things.

Lots of organizations and projects known for their top-notch documentation are already using it: Django, Cloudflare, NumPy, etc.