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| Criterion |  DevOps Blameless Postmortem |  Product Strategy Lean Canvas |  Operations Barrier Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-90 min | 45-90 min | 2-4 h | 2-4 h |
Participantsdifferent | 3-12 | 1-6 | 2-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Lean Canvas, Core Assumptions, Experiment Backlog | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | StartupLeanAssumptionsBusiness model | Root causeSafetyIncident | Root causePatternsIncidentSystemic |