Why we picked it This is the reference implementation of your thesis: the handbook IS the process, not a description of it. GitLab's rule that any change (policy, process, decision) gets written into the handbook before it is communicated is exactly your 'updating it is part of shipping any new process' point, made operational by a company that runs on it. Do not copy its 2000+ pages: read the handbook-first page for the discipline, then steal only its table-of-contents structure (how we work, decisions, comp, tools) as a skeleton for your one living doc.
The GitLab Handbook (and the Handbook-First Approach)
From GitLab Handbook by GitLab browse 30 min
- Write the change into the doc first, then communicate it, so the handbook is the single source of truth instead of a stale summary of Slack decisions
- Structure by 'how do we do X here' sections (comms, decisions, comp, tooling), which is a ready-made outline for your first handbook
- The 2000+ page scale is a warning, not a target: an early-stage team wants one lean living doc, not GitLab's full surface area