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| Criterion |  Decision Making Decision Tree |  Decision Making Pre-Mortem |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 20–45 min | 30-90 min |
Participantsdifferent | 1-6 | Small cross-functional group | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Decision Tree, Option Map, Assumption List | Risk list, Mitigation plan, Assumption log | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | DecisionTreeOptions | RiskDecisionFailurePlanning | Site Reliability EngineeringIncidentLearningReliability |
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