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| Criterion |  DevOps Blameless Postmortem |  Operations 5 Whys |  Decision Making Force Field Analysis |  Operations Root Cause 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 30-90 min | 15-30 min | 45-90 min | 1-4 h |
Participantsdifferent | 3-12 | 2-6 | 3-12 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures | Force Field Map, Change Levers, Risk Notes | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving | ChangeDecisionStrategy | Root causeProblem solvingQualityIncident |