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| Criterion |  DevOps ChatOps |  Architecture Architecture Decision Record |  Operations 5 Whys |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | Ongoing | 15-45 min | 15-30 min | 45-90 min |
Participantsdifferent | 2-20 | 1-3 | 2-6 | 2-5 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Chat Transcript, Action Log, Automations | ADR File, Decision Log, Rationale | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | CollaborationEngineeringIncident | ArchitectureRationaleDocumentationGovernance | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations |