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| Criterion |  Operations Causal Factor Analysis |  DevOps Blameless Postmortem |  Architecture Architecture Communication Canvas |
|---|---|---|---|
Purposedifferent | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | High | Medium | Medium |
Timedifferent | 2-6 h | 30-90 min | 60-120 min |
Participantsdifferent | 3-10 | 3-12 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Postmortem Doc, Action Items, Timeline | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | CausalityIncidentRoot causeTimeline | Site Reliability EngineeringIncidentLearningReliability | ArchitectureCommunicationStakeholdersCanvas |
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