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| Criterion |  DevOps Blameless Postmortem |  Facilitation World Café |  Facilitation Lean Coffee |
|---|---|---|---|
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 group needs to connect many viewpoints in a short time, World Café creates a calm alternation between closeness and rotation. It sets thinking in motion without forcing the conversation into full-plenary rigidity. | When a group without a fixed agenda needs to get into useful conversations quickly, Lean Coffee structures the start around interests rather than a presentation. The group itself negotiates which topics get time first and which wait. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 30-90 min | 60-180 min | 30-90 min |
Participantsdifferent | 3-12 | 12-100+ | 3-20 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Table Notes, Emergent Themes, Shared Questions | Prioritized Topics, Discussion Notes, Action Items |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | FacilitationDialogueLarge groupSensemaking | FacilitationAutonomyDialogue |
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