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Team Documentation Best Practices

Documentation is either an asset or a liability. Good docs help onboarding, reduce questions, and preserve knowledge. Bad docs—outdated, unfindable, or incomplete—actively harm by providing wrong information. The key is documenting the right things in the right places with sustainable maintenance.

Documentation Types

TypePurposeUpdate Frequency
Architecture Decision RecordsWhy decisions were madeWhen decisions change
READMEHow to get startedWith major changes
RunbooksHow to handle incidentsAfter incidents
API docsContract specificationWith API changes
Process docsHow team worksQuarterly review

What to Document

High-Value Documentation

DOCUMENTATION PRIORITIES
════════════════════════

MUST HAVE:
─────────────────────────────────────
1. SETUP GUIDE
   "How to get this running locally"
   ├── Prerequisites
   ├── Clone and install
   ├── Environment setup
   ├── Running locally
   ├── Running tests
   ├── Common issues
   └── First task guide

2. ARCHITECTURE OVERVIEW
   "How this system works"
   ├── High-level diagram
   ├── Components and responsibilities
   ├── Data flow
   ├── Key technologies
   └── External dependencies

3. ARCHITECTURE DECISIONS (ADRs)
   "Why we chose this approach"
   ├── Context
   ├── Decision
   ├── Consequences
   └── Alternatives considered

4. TEAM PROCESSES
   "How we work together"
   ├── Development workflow
   ├── Code review process
   ├── Sprint ceremonies
   ├── On-call rotation
   └── Escalation paths

5. RUNBOOKS
   "How to handle problems"
   ├── Deploy process
   ├── Rollback procedure
   ├── Common incidents
   └── Emergency contacts

What NOT to Document

SKIP THESE DOCS
═══════════════

DON'T DOCUMENT:
─────────────────────────────────────
✗ Obvious code
  The code explains itself.
  If it doesn't, improve the code.

✗ Rapidly changing details
  Will be outdated immediately.
  Creates liability, not asset.

✗ Things better as comments
  Keep docs close to code.
  Inline comments > separate doc.

✗ Duplicating official docs
  Link to external docs instead.
  Don't copy-paste React docs.

✗ Every edge case
  Document patterns, not exceptions.
  Let developers reason.

RULE OF THUMB:
─────────────────────────────────────
If it will be wrong in 2 weeks,
either don't document or automate.

If someone asks the same question 3 times,
document the answer.

Documentation Location

Where Docs Live

DOCUMENTATION PLACEMENT
═══════════════════════

CLOSE TO CODE:
─────────────────────────────────────
├── README.md: Repo overview, setup
├── docs/ folder: Developer guides
├── Inline comments: Why, not what
├── API comments: Contract specs
└── .github/: Contributing, templates

Benefits:
├── Updated with code changes
├── Versioned with code
├── Found where developers work
├── PR can update both
└── One source of truth

TEAM WIKI/NOTION:
─────────────────────────────────────
├── Team processes
├── Meeting notes
├── Onboarding guides
├── Decision records
├── Non-code knowledge
└── Living documents

GITSCRUM NOTEVAULT:
─────────────────────────────────────
├── Project documentation
├── Feature specifications
├── Sprint notes
├── Retrospective records
├── Stakeholder updates
└── Project context

RUNBOOK LOCATION:
─────────────────────────────────────
├── Near where you'll need it
├── Linked from monitoring
├── In on-call tools
├── Not buried in wiki
└── Findable at 3 AM

Documentation Structure

Templates

SETUP GUIDE TEMPLATE
════════════════════

# Project Name

## Prerequisites
- Node.js 18+
- Docker
- Access to [services]

## Quick Start

git clone [repo] cd [project] npm install cp .env.example .env docker-compose up -d npm run dev


## Environment Variables
| Variable | Description | Example |
|----------|-------------|---------|
| DATABASE_URL | Postgres connection | postgres://... |
| API_KEY | External API key | Get from [link] |

## Running Tests

npm test # Unit tests npm run test:e2e # E2E tests


## Common Issues
**Port 3000 in use**
Kill existing process or use `PORT=3001 npm run dev`

## Next Steps
- [Contributing Guide](CONTRIBUTING.md)
- [Architecture Overview](docs/architecture.md)
- [First Good Issues](link-to-issues)


ADR TEMPLATE
════════════

# ADR-001: [Title]

## Status
[Proposed | Accepted | Deprecated | Superseded]

## Context
What is the issue we're seeing that motivates this decision?

## Decision
What is the change we're proposing/doing?

## Consequences
What are the positive and negative results of this decision?

## Alternatives Considered
What other options did we evaluate?

Maintenance

Keeping Docs Current

DOCUMENTATION MAINTENANCE
═════════════════════════

EVERGREEN VS LIVING:
─────────────────────────────────────
Evergreen (rarely changes):
├── Architecture decisions (historical)
├── Team values
├── High-level architecture
└── Review: Annually

Living (changes frequently):
├── Setup guides
├── API documentation
├── Process docs
└── Review: With changes

MAINTENANCE STRATEGIES:
─────────────────────────────────────
1. UPDATE WITH CODE
   PR changes API? Update API docs in same PR.
   Definition of Done includes doc update.
   Review docs in code review.

2. AUTOMATE WHAT YOU CAN
   API docs from code comments (OpenAPI).
   Diagrams from code (Mermaid).
   Runbooks from automation scripts.

3. SCHEDULED REVIEW
   Calendar: Quarterly doc review.
   Walk through with new hire.
   Delete outdated docs.

4. OBVIOUS OWNERSHIP
   Each doc has owner.
   Owner reviews on schedule.
   No orphan docs.

DOC REVIEW CHECKLIST:
─────────────────────────────────────
□ Still accurate?
□ Still needed?
□ Still findable?
□ Links working?
□ Owner still here?

Deleting Bad Docs

DOC HYGIENE
═══════════

WHEN TO DELETE:
─────────────────────────────────────
├── Outdated and not worth updating
├── Duplicates better source
├── No one has read in 6 months
├── Owner left, no one adopts
├── Information is wrong
└── Better as code comment

DELETION PROCESS:
─────────────────────────────────────
1. Check: Does anyone use this?
   Search for links, ask team.

2. Archive or delete:
   Controversial? Move to archive folder.
   Clearly dead? Delete.

3. Redirect if linked:
   If URLs exist, redirect to replacement.

BAD DOC IS WORSE THAN NO DOC:
─────────────────────────────────────
Wrong information = worse than asking.
New hire follows outdated steps.
Wastes time, creates frustration.
Delete rather than leave wrong.

GitScrum Integration

Project Documentation

GITSCRUM DOCUMENTATION
══════════════════════

NOTEVAULT:
─────────────────────────────────────
Project-level documentation:
├── Project overview
├── Feature specifications
├── Technical decisions
├── Meeting notes
├── Sprint retrospectives
└── Stakeholder communication

LINKED TO WORK:
─────────────────────────────────────
Task → Link to spec doc
Epic → Link to design doc
Decision → Link to ADR
Keeps context connected.

SEARCH:
─────────────────────────────────────
Full-text search across:
├── Task descriptions
├── Comments
├── Documents
└── Find past discussions

Best Practices

For Documentation

  1. Document the why — Code shows what
  2. Keep close to code — README, not wiki
  3. Make findable — Good names, structure
  4. Maintain or delete — No stale docs
  5. Test with newcomers — Onboarding validates

Anti-Patterns

DOCUMENTATION MISTAKES:
✗ Documentation graveyard (never updated)
✗ Everything in one giant doc
✗ Duplicating what code shows
✗ Wiki nobody can find
✗ No ownership
✗ Writing for writing's sake
✗ Documentation instead of better code
✗ Scattered across 5 tools
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