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| Criterion |  Operations Barrier Analysis |  Facilitation Open Space Technology |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | 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. | When a complex topic does not yet have a fitting agenda, Open Space Technology hands topic ownership back to the participants. The format suits questions that only move forward when real interest determines the order. | 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 | Medium | High | Medium |
Timedifferent | 2-4 h | 0.5-2 Tage | 30-90 min |
Participantsdifferent | 2-6 | 20-500+ | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Session Marketplace, Proceedings, Action Topics | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | Root causeSafetyIncident | FacilitationLarge groupAutonomy | Site Reliability EngineeringIncidentLearningReliability |
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