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| Criterion |  DevOps Blameless Postmortem |  Operations Root Cause Analysis |  Operations Scatter Diagram |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | 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. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | 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. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 30-90 min | 1-4 h | 30-90 min | 1-6 Wochen |
Participantsdifferent | 3-12 | 3-8 | 1-4 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Scatter Plot, Korrelationsnotiz, Hypothesenliste | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeProblem solvingQualityIncident | Root causeQualityVisualization | QualityProblem solvingRoot cause |