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| Criterion |  Facilitation Expectation Mapping |  DevOps Blameless Postmortem |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | When roles, interfaces, or projects fail because of differing expectations, Expectation Mapping surfaces these differences. It shows what each side takes for granted and where the pictures diverge. | 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 problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 45-90 min | 30-90 min | 1-3 h |
Participantsdifferent | 3-12 | 3-12 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Expectation Map, Alignment Notes, Agreements | Postmortem Doc, Action Items, Timeline | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | AlignmentStakeholdersTeam | Site Reliability EngineeringIncidentLearningReliability | Root causeTreeIncidentQuality |
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