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| Criterion |  Decision Making Pre-Mortem |  DevOps Blameless Postmortem |  Decision Making Force Field Analysis |
|---|---|---|---|
Purposedifferent | 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. | In change initiatives, supporting and restraining forces sit at the table at the same time. Force Field Analysis makes these tensions explicit and shows where change can be pushed forward by strengthening or relieving. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 20–45 min | 30-90 min | 45-90 min |
Participantsdifferent | Small cross-functional group | 3-12 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Postmortem Doc, Action Items, Timeline | Force Field Map, Change Levers, Risk Notes |
Tagsno overlap | RiskDecisionFailurePlanning | Site Reliability EngineeringIncidentLearningReliability | ChangeDecisionStrategy |
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