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| Criterion |  Operations Barrier Analysis |  Operations Learning Review |  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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 2-4 h | 1-3 h | 30-90 min |
Participantsdifferent | 2-6 | 3-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Learning Review Notes, System Factors, Improvement Actions | Postmortem Doc, Action Items, Timeline |
Tags1 shared | Root causeSafetyIncident | LearningRetrospectiveIncidentOperations | Site Reliability EngineeringIncidentLearningReliability |
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