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| Criterion |  Knowledge Modeling Teach-back |  Operations Barrier Analysis |  Operations Family Tree Analysis |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | Teach-back checks whether an explanation actually got through to the other person. The method makes misunderstandings visible early and strengthens shared understanding in advisory and learning situations. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | 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 | Low | Medium | Medium | Medium |
Timedifferent | 5-20 min | 2-4 h | 2-4 h | 30-90 min |
Participantsdifferent | 2-8 | 2-6 | 2-6 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Understanding Check, Clarification Notes, Learning Gaps | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Family Tree Diagram, Pattern Notes, Systemic Measures | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LearningUnderstandingCommunication | Root causeSafetyIncident | Root causePatternsIncidentSystemic | Site Reliability EngineeringIncidentLearningReliability |