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| Criterion |  Operations Fault Tree Analysis |  Business Strategy Strategy Execution Loop |  DevOps Blameless Postmortem |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | The Strategy Execution Loop helps avoid treating strategy as a one-off document. It makes visible how strategic decisions are turned into objectives, initiatives, operational work, measurement, and learning. | 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 | High | High | Medium | Low |
Timedifferent | 2-6 h | Initial 3-6 h, then monthly or quarterly reviews | 30-90 min | 15-30 min |
Participantsdifferent | 3-8 | 5-12 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Execution Loop, Review Cadence, Strategic Learning Log | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures |
Tagsno overlap | RiskRoot causeSafety | ExecutionCadenceLearningGovernance | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving |