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| Criterion |  DevOps ChatOps |  Operations Runbook |  Architecture Architecture Decision Record |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | 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. | 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. | 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 | Medium | Low | Low | Medium |
Timedifferent | Ongoing | 20-60 min | 15-45 min | 30-90 min |
Participantsdifferent | 2-20 | 1-4 | 1-3 | 3-12 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | Chat Transcript, Action Log, Automations | Runbook, Checklist, Escalation Path | ADR File, Decision Log, Rationale | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | CollaborationEngineeringIncident | OperationsReliabilityDocumentation | ArchitectureRationaleDocumentationGovernance | Site Reliability EngineeringIncidentLearningReliability |