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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking CATWOE Analysis |  Operations Failure Mode and Effects 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. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 30-90 min | 45-90 min | 2-6 h |
Participantsdifferent | 3-12 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Systems thinkingFramingStakeholders | RiskQualityOperationsRoot cause |
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