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| Criterion |  DevOps Blameless Postmortem |  Operations Family Tree Analysis |  Operations Causal Factor 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. | 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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 30-90 min | 2-4 h | 2-6 h |
Participantsdifferent | 3-12 | 2-6 | 3-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Family Tree Diagram, Pattern Notes, Systemic Measures | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tags1 shared | Site Reliability EngineeringIncidentLearningReliability | Root causePatternsIncidentSystemic | CausalityIncidentRoot causeTimeline |
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