Launch day is a poor time to invent the recovery plan.
The team is watching traffic, answering messages, and fixing small defects. A serious failure arrives disguised as one more notification. Without a runbook, everyone investigates and nobody decides.
Speed is useful only while someone still knows how to stop.
Name one launch owner
One person decides whether to continue, pause, or roll back. Others may investigate, communicate, or repair. The owner keeps the whole system in view.
Write down who holds each role and how to reach them. For a solo founder, the roles still matter. They become a sequence: contain, understand, communicate, repair.
Define stop conditions before traffic arrives
Choose the failures that end the launch immediately:
- One user can see another user’s data.
- Payments are duplicated or mispriced.
- Signup or the core job fails for a meaningful share of users.
- Data is being lost or corrupted.
- Abuse or cost is growing without a working limit.
Make the thresholds concrete enough to decide under pressure. Cosmetic defects belong in a queue. Privacy, money, and irreversible data errors do not.
The production checklist for AI-built apps helps identify these paths before the launch window.
Rehearse the rollback
Know the last safe release. Keep database changes backward-compatible when possible. Write the commands or provider actions needed to disable the new path, restore the prior version, pause billing, or switch the product into a safe read-only state.
Then rehearse one rollback. A plan that depends on a button nobody can find is not a plan.
Do not make rollback more destructive than the incident. Preserve evidence. Avoid hurried migrations or broad deletions. If a feature flag can safely isolate the failing path, use it.
Watch the user journey, not only the server
Healthy infrastructure can serve a broken product quickly.
Monitor the core sequence: arrival, signup, key action, result, payment when relevant, and return. Pair this with errors, latency, provider failures, queues, rate limits, and cost. Check support channels for reports the dashboard cannot see.
Use a fresh account during the launch. Founders’ old sessions hide authentication and onboarding failures.
Communicate with facts
If users are affected, say what is failing, when it began, what they should avoid, whether their data or money is at risk, and when you will update them. Do not declare data safe before checking. Do not write a long defense while the incident continues.
Keep a timestamped log of decisions. It will make the post-incident review better and stop the team from repeating work.
End with a smaller system
After recovery, identify the earliest signal that could have exposed the problem. Add that check. Remove any launch step that created noise without protecting users.
The purpose of a runbook is not to make a small startup behave like an airline. It is to preserve judgment when attention becomes scarce. Pair it with the broader guide to launching a startup through repeated small releases and the guide to launching a vibe-coded app without shipping a trap, then keep the document short enough to use.