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| Criterion |  DevOps Blameless Postmortem |  Domain Modeling EventStorming |  Systems Thinking Current Reality Tree |  Operations Barrier Analysis |
|---|---|---|---|---|
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 domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 30-90 min | 2-8 h | 2-6 h | 2-4 h |
Participantsdifferent | 3-12 | 5-12 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Current Reality Tree, Core Problems, Intervention Ideas | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Domain-Driven DesignEventsDiscoveryWorkshop | Systems thinkingRoot causeConstraintsCausality | Root causeSafetyIncident |