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| Criterion |  Architecture Architecture Decision Record |  Operations A3 Problem Solving |  Decision Making Decision Rights Mapping |  Operations RACI Matrix |
|---|---|---|---|---|
Purposedifferent | 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 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. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. | 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 | Low | Medium | Medium | Low |
Timedifferent | 15-45 min | 45-90 min | 90-180 min | 45-90 min |
Participantsdifferent | 1-3 | 2-5 | 4-12 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | A3 Report, Action Plan, Root Cause Analysis | Decision Rights Matrix, Agreement | RACI Matrix, Responsibility Map, Decision Notes |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | LeanProblem solvingCoachingOperations | DecisionGovernanceAlignmentResponsibility | RolesResponsibilityGovernanceOperations |