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| Criterion |  Product Strategy DIBB |  DevOps Blameless Postmortem |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 1-2 h | 30-90 min | 15-30 min |
Participantsdifferent | 2-8 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | DIBB document, Belief list, Bet list, Learning report | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures |
Tagsno overlap | StrategyDecisionAssumptionsHypothesis | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving |
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