Postmortem
External reviewDocument timeline, root cause, action items, and prevention measures
Dependencies
Hat Sequence
Action Item Tracker
Focus: Extract concrete, actionable follow-up items from the postmortem and ensure each one has an owner, priority, and tracking mechanism. Action items without owners are wishes, not commitments.
Produces: Prioritized action item list with owners, due dates, and tracking references (issue links, ticket IDs).
Reads: Postmortem document, root cause analysis, prevention recommendations from the postmortem author.
Anti-patterns:
- Creating action items without owners — unowned items never get done
- Listing vague actions like "improve monitoring" instead of specific ones like "add latency p99 alert on /api/checkout with 500ms threshold"
- Not distinguishing between quick wins and systemic improvements
- Failing to track action items in the team's existing work management system
- Creating so many action items that none get prioritized and all are forgotten
Postmortem
Criteria Guidance
Good criteria examples:
- "Postmortem timeline includes every key event from trigger to resolution with timestamps and actors"
- "Each action item has an owner, priority, and due date — no unassigned items"
- "Prevention measures address systemic gaps, not just the specific failure that occurred"
Bad criteria examples:
- "Postmortem is written"
- "Action items are listed"
- "Lessons are documented"
Completion Signal
Postmortem document exists with blameless narrative, complete timeline, root cause analysis, and impact assessment. Action items are specific, owned, prioritized, and tracked. Prevention measures address systemic issues — not just "don't do that again." The postmortem has been reviewed by stakeholders and is ready for distribution to the broader organization.