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| Criterion |  Operations A3 Problem Solving |  Architecture Architecture Decision Record |  Decision Making DACI |  Operations RACI Matrix |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 45-90 min | 15-45 min | 30-60 min | 45-90 min |
Participantsdifferent | 2-5 | 1-3 | 2-10 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | ADR File, Decision Log, Rationale | DACI Matrix, Decision Owner, Decision Log | RACI Matrix, Responsibility Map, Decision Notes |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureRationaleDocumentationGovernance | DecisionRolesGovernanceAlignment | RolesResponsibilityGovernanceOperations |