Documentation Review and Maintenance
Documentation starts decaying the day it is published. Features change, screens move, procedures gain a step, links break, and the people who knew why things work the way they do move to other teams. Stale documentation is worse than missing documentation, because readers trust it: an outdated runbook can turn an incident into an outage, and an outdated setup guide costs every new hire an afternoon.
Writing documentation is a project; keeping it accurate is a process. That process rests on a few habits: every page has an owner, changes that affect documentation trigger a review, pages are re-checked on a cadence that matches how fast they drift, readers can report problems easily, and pages that no longer earn their place are archived or removed. Docs-as-code makes updating cheap; this guide covers making sure updates actually happen.
TL;DR
- Give every page an owning team and a visible last-reviewed date.
- Review on triggers — code, API, and UI changes, releases, and incidents — not only on a calendar.
- Set review cadences by page type: runbooks drift fastest; concepts slowest.
- Automate decay detection: overdue reviews, broken links, failing samples, and pages nobody reads.
- Make reader feedback one click away and route it to the owner.
- Use explicit criteria to update, merge, archive, or delete — with redirects for anything removed.
Quick Example
Ownership and review metadata in each page's frontmatter:
A weekly job lists overdue pages by owner, so reviews become assigned work rather than good intentions:
A separate lint can require owner and last_reviewed on every page, so nothing escapes the report.
Core Concepts
Why Documentation Decays
Each needs a different defense: triggers catch drift, automation catches rot, ownership survives knowledge loss, and pruning controls sprawl.
Ownership
Assign pages to teams, not individuals — people change roles; teams persist. The owner reviews the page on schedule, answers feedback, and decides its lifecycle. In a repository, a CODEOWNERS file can require the owning team's review for changes under their documentation paths, which keeps ownership enforced rather than merely recorded.
Review Triggers
Review Cadence by Page Type
Running a Review
A review is more than updating a date. For each page:
- Follow it. Run the commands, click through the steps, and try the code samples in a clean environment.
- Check accuracy and completeness against the current product, including prerequisites and error cases.
- Fix rot: links, screenshots, versions, and terminology — see Documentation Style Guides.
- Check the audience: is the page still pitched at the reader who actually arrives?
- Decide the lifecycle: keep, update, merge, archive, or delete.
- Record the review by updating
last_reviewed— only after the checks above.
For a large backlog of overdue pages, a periodic documentation "fixit" day, with pages assigned in advance, clears more than scattered individual effort.
Detecting Decay Automatically
Documentation Health Metrics
Track a handful of numbers and review them with the teams that own the pages: the share of pages within their review date, open broken links, median time to resolve feedback, and failed searches. Trends matter more than targets — a growing overdue backlog is an early warning that documentation is losing its owners.
Archive, Merge, or Delete
Every removed or moved URL needs a redirect. Broken inbound links frustrate readers, break bookmarks and other docs, and lose search ranking.
Best Practices
Show Freshness to Readers
Display "last reviewed" dates on pages. Readers calibrate their trust, and visible dates create gentle pressure on owners.
Make Feedback Effortless
A one-click "Was this helpful?" with an optional comment, or a link to suggest an edit, catches problems that no scheduled review would. Route feedback to the owning team's queue with a response target.
Treat Documentation Bugs as Bugs
Triage documentation issues alongside product issues, with severity: a wrong command in a production runbook is urgent; a typo is not.
Prefer Fewer, Better Pages
Every page is a maintenance commitment. Merging overlapping pages and deleting dead ones makes the remaining documentation easier to keep accurate — and easier to find.
Common Mistakes
Owners Who Have Left
Rubber-Stamp Reviews
Deleting Without Redirects
Rewriting History
FAQ
How often should documentation be reviewed?
It depends on how fast the content drifts and how costly errors are. Operational runbooks every few months and after each incident in which they are used; tutorials with each major release; conceptual pages about once a year. Triggered reviews — after code, UI, or process changes — matter as much as the calendar.
Who should own documentation: writers or engineers?
The team that owns the product area should own its pages, because they know when things change. Technical writers, where an organization has them, own structure, style, and editing quality, and help teams keep up. Ownership by a central documentation team alone tends to fall behind product changes.
How do we find stale documentation?
Combine review-date reports with signals from readers and systems: broken links, failing code samples, negative feedback, support tickets that cite a page, and searches that return nothing. Pages with no traffic for a long time are candidates for archiving.
What is the difference between archiving and deleting?
An archived page stays available, clearly marked as historical or for older versions, and is usually excluded from default search. A deleted page is gone, and its URL should redirect elsewhere. Archive when some readers still need the content; delete when nobody should rely on it.
How do we keep documentation reviewed without a dedicated writer?
Make reviews part of normal engineering work: documentation changes in the same pull request as code, path-based review triggers, a weekly overdue report assigned to owning teams, and an occasional fixit day. Automation — link checking, sample tests, overdue reports — does most of the noticing.
Related Topics
- Technical Writing & Documentation — Writing and publishing technical content
- Docs-as-Code — Documentation in the repository, reviewed and tested in CI
- Documentation Style Guides — Consistent terminology and voice
- Runbooks — The documentation that most needs frequent review
- Architecture Decision Records — Historical records that are superseded, not edited
- API Documentation — Reference generated from specifications
- Versioned Documentation and Executable Examples — Version policies and examples tested in CI