Every company needs documentation. Well... not really.
If you're a startup griding crazy to get your MVP out and get feedback, you couldn't care less about documentation.
If you have a product out and a couple of customers, docs are not that important. You can just ask around your team across the desk or on a Slack channel.
If you found product-market fit, got your first round of funding, and are scaling your team above 10, you probably also don't need that much documentation. You can just throw hours at it because there are so many of you right now compared to 6 months ago.
If you're a series A or B company with a couple of Ms in ARR, documentation starts to look attractive, but you can go without, no doubt.
If you’ve recently gone public, your headcount has crossed 500. There’s still plenty of tribal knowledge hanging around—documentation is an issue, but there are stopgaps. Just bring in more sales reps; after all, revenue fixes everything.
In reality, the path you chose was the least efficient option, and documentation could have delivered the greatest impact you can imagine:
TURN STATIC DOCS INTO INSTANT ANSWERS
Build beautiful knowledge portals that are easy to navigate, search and share
1. clearing misunderstandings among team members;
2. making the founders' vision clearer to themselves and to the whole company;
3. faster customer support answers;
4. faster or automated onboarding of new members;
5. less knowledge churn;
6. increased engineering productivity;
7. more stable run through the years;
8. less hassle in becoming a remote company when a virus hits out of nowhere.
I could go on... but you already know it. Documentation is how we build things.
Frequently Asked Questions
Yes—keep it tiny and ruthlessly useful. A lightweight, living set of docs prevents rework, cuts Slack pings, and makes adding the next engineer or contractor painless.
Start with the bare minimum (1–2 pages total):
- README: what the product does, high-level architecture, constraints, and known gaps.
- Quickstart: how to install, run, test, seed data, and common troubleshooting steps.
- Decision log (short ADRs): a few lines on why you chose X over Y, with date and owner.
- One-page onboarding checklist: accounts, repos, environments, secrets, and daily rituals.
Working cadence:
- Update right after meaningful changes (timebox 15–30 minutes). No standing doc meetings.
- Keep one home (top-level repo README or a single wiki page) to avoid link hunting.
- Name a DRI for docs each sprint/release so updates actually happen.
Skip for MVP:
- Heavy templates, polished diagrams, and process binders. Capture only what you’d otherwise repeat in Slack.
Simple rule: If you’ve typed it twice, document it once.
Let your documentation grow with your complexity. Think in stages:
- 1–5 people: README, quickstart, short decision log.
- 10–20 people: Add runbooks for common tasks, a team charter, API/interface docs, and a basic Definition of Done.
- 20–50 people: Introduce an architecture map, incident/on-call process, product spec templates, and support macros/FAQs.
- 50–200 people: Version docs, define owners, add security/privacy/compliance basics, and role-based onboarding paths.
- 200+ people: Establish information architecture, doc review/quality gates, governance, and analytics to spot usage and gaps.
Signals you’ve outgrown your current setup:
- The same questions keep popping up in Slack and meetings.
- Onboarding takes longer than planned.
- Incidents linger because only one person knows how to fix them.
- Decisions get revisited because the context is missing.
Pro tips:
- Assign owners and lightweight SLAs to key pages—stale docs are worse than none.
- Quarterly prune: archive or merge duplicates and flag outdated pages for update.
Great documentation drives clarity, speed, and consistency across the company:
- Team alignment: Fewer misunderstandings and do-overs because standards and decisions are explicit.
- Vision clarity: Goals, strategy, and product rationale are written, shareable, and referenceable.
- Faster support: Playbooks and FAQs reduce response and resolution times.
- Smoother onboarding: Checklists and system overviews accelerate ramp-up.
- Less knowledge churn: Critical know-how survives departures and vacations.
- Higher engineering throughput: Specs, ADRs, and runbooks reduce blockers and context switching.
- Operational stability: Processes evolve predictably as you scale.
- Remote readiness: Written, async context makes distributed work far easier.
Teams often see fewer escalations, shorter incident recovery, faster code reviews, and measurable reductions in onboarding time.
Many wait until Series A/B or 500+ people—when the pain is obvious and costly. Better: start light early and level up when clear triggers appear.
Upgrade when you notice:
- Hiring across time zones or multiple teams forming.
- 10–15+ engineers and more cross-team handoffs.
- 24/7 support/on-call or frequent incidents.
- Enterprise deals that require security/process docs.
- Repeat questions and lengthening onboarding.
Practical path:
- Early: README, quickstart, decision log, onboarding checklist.
- Growing: Runbooks, team charters, product specs, incident process.
- Scaling: Ownership model, versioning, security/compliance docs, governance.
Rule of thumb: If two or more triggers fire, it’s time to level up—before the retrofit gets painful.
Documentation isn’t paperwork—it’s the operating system for how you build and run the company. Expect:
- Faster time to productivity: Shorter onboarding and fewer interrupts.
- Lower support and incident costs: More self-serve answers, faster MTTR, fewer escalations.
- Higher engineering throughput: Clear specs, fewer context switches, less duplicated work.
- Better alignment with fewer meetings: Decisions recorded once and reused.
- Resilience to growth and turnover: Knowledge persists as teams change or go remote.
- Stronger enterprise readiness: Security, privacy, and process docs accelerate deals and audits.
Bottom line: you move faster with more confidence, serve customers more consistently, and scale without chaos.