Documentation should reduce uncertainty, not add more reading.

The worst docs are the ones that describe everything and still leave someone asking, “So what do I actually do on Tuesday?” They read like a dump of context instead of a guide for the next person who has to act. In regulated or high-stakes environments, the temptation is to document for the audit first and for the operator second. You can satisfy both if you separate noise (background that rarely changes decisions) from how (repeatable steps, boundaries, and examples).

Capture repeatable decisions

The highest-value documentation answers: When this situation comes up again, how do we handle it without a meeting?

That usually means:

• Standards: naming, tagging, approved patterns, supported tools.
• Boundaries: what requires approval, what is safe to automate, what must never happen in production.
• Examples: one good “gold path” walkthrough beats five pages of abstract principles.

If your doc only restates policy language, it is not operational. If it shows what “good” looks like in your environment (screenshots, CLI snippets, a filled-in template), it becomes something people trust.

Keep it close to execution

Docs that live in a folder nobody opens during delivery drift the fastest. The best ones sit next to the work: in the repo, in the ticket template, in the runbook linked from the monitoring alert, in the checklist pinned to the channel where incidents get triaged.

Treat updates as part of the definition of done. When a process changes because reality demanded it, the doc should change in the same change set, not “when someone has time,” which is usually never.

A simple test: can a new teammate follow the doc once, cold, and produce an acceptable outcome? If the honest answer is no, you are not documenting the how yet. You are documenting the story of how you got here. Stories have their place. Operators need the how.

What to leave out

You do not need to capture every historical debate. Archive old context if it helps legal or learning, but keep the “how” layer short and current. Noise includes duplicate pages, contradictory wikis, and screenshots from a UI that no longer exists. Those actively harm confidence: people stop trusting documentation altogether.

Good documentation is a kindness to your future self and to anyone who has to execute when you are not in the room. Make it usable, not encyclopedic.