ASK HN: HOW DO YOU ORGANIZE SOFTWARE DOCUMENTATION AT WORK? (HACKER NEWS THREAD)

Summary from the TLDR Web Dev newsletter

Commenters recommend various types of documentation. One type is executable documentation, such as descriptive tests and asserts throughout code. Another is timestamped documentation, like a doc with the last time it was updated or detailed pull requests. Other forms of documentation include Confluence, a documentation repository of Markdown files, and design docs.