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| Criterion |  Operations Root Cause Analysis |  Operations 8D Problem Solving |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 | High | Medium |
Timedifferent | 1-4 h | 1-6 Wochen | 30-90 min |
Participantsdifferent | 3-8 | 4-10 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | Root causeProblem solvingQualityIncident | QualityProblem solvingRoot cause | Site Reliability EngineeringIncidentLearningReliability |
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