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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking CATWOE Analysis |  Facilitation 3-Circle Venn Diagram |  Facilitation Stakeholder Mapping |
|---|---|---|---|---|
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. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | When an initiative depends on many people, interests, and power dynamics, Stakeholder Mapping systematically orders the environment. It shows who influences, who is affected, and where relationship management or safeguarding matters first. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-90 min | 45-90 min | 15-45 min | 60–90 min |
Participantsdifferent | 3-12 | 3-8 | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | Venn Diagram, Overlap Notes, Differentiators | Stakeholder Map, Engagement Plan, Risk Notes |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Systems thinkingFramingStakeholders | ComparisonFacilitationAlignment | StakeholdersAlignmentFacilitationChange |