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| Criterion |  Operations Runbook |  Operations RACI Matrix |  DevOps Blameless Postmortem |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | 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. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 20-60 min | 45-90 min | 30-90 min | 15-45 min |
Participantsdifferent | 1-4 | 2-8 | 3-12 | 1-3 |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Runbook, Checklist, Escalation Path | RACI Matrix, Responsibility Map, Decision Notes | Postmortem Doc, Action Items, Timeline | ADR File, Decision Log, Rationale |
Tagsno overlap | OperationsReliabilityDocumentation | RolesResponsibilityGovernanceOperations | Site Reliability EngineeringIncidentLearningReliability | ArchitectureRationaleDocumentationGovernance |