Run a Miro Pre-Mortem Before Release
Imagine the release has failed, collect plausible reasons independently and convert the most consequential mechanisms into safeguards. This is a manual risk workshop, not a prediction that every listed scenario will occur.
Before you start: Have release scope, dependencies and a facilitator. Include engineering, product and operational perspectives where relevant.
Worked example: A bulk-invite release could send duplicate emails after retries. Map the mechanism, how it would be detected and how the team would stop or recover the operation.
Step-by-step guide
Fix the scenario
State the release and a concrete unsuccessful outcome. Avoid a vague instruction to imagine everything going wrong.
Collect failure stories
Give participants quiet time to describe plausible mechanisms. Keep specific sequences rather than broad labels such as poor communication.
Group and challenge
Combine related mechanisms while preserving unusual high-consequence cases. Ask what would have to happen for each story to be credible.
Choose important risks
Consider consequence, evidence and the team’s ability to detect the problem. Mark uncertain estimates instead of inventing calibrated probabilities.
Design safeguards
For each priority risk, assign prevention, detection and recovery actions. A safeguard should have a testable owner and completion condition.
Check release readiness
Review the actions before launch and record accepted residual risk. Keep the workshop output available during the rollout.
Common mistakes
Failure list without action
A catalog does not reduce risk.
Only likely issues considered
A rare high-consequence failure can matter.
No recovery owner
Prevention can fail. Plan what happens next.
Tips
Invite someone who operates the system after release.
Keep mechanisms more specific than labels.
Revisit safeguards after scope changes.
Sources and verification
Based on product documentation checked on 2026-10-24. This is a documentation-based guide, not a hands-on benchmark. Features and availability can change.