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| Criterion |  Operations RACI Matrix |  Architecture arc42 |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | With unclear responsibilities across several roles or areas, the method creates unambiguous accountability logic. It reduces friction because decision, execution, contribution, and information become separately visible. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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 | Low | Medium |
Timedifferent | 45-90 min | 1-2 Tage | 30-90 min |
Participantsdifferent | 2-8 | 1-4 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | RACI Matrix, Responsibility Map, Decision Notes | Architecture Document, Context View, Runtime View, Deployment View | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | RolesResponsibilityGovernanceOperations | ArchitectureDocumentationCommunication | Site Reliability EngineeringIncidentLearningReliability |
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