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| Criterion |  Operations Kepner-Tregoe |  Operations A3 Problem Solving |  Architecture Architecture Decision Record |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 2-8 h | 45-90 min | 15-45 min | 1-2 Tage |
Participantsdifferent | 2-8 | 2-5 | 1-3 | 1-4 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | A3 Report, Action Plan, Root Cause Analysis | ADR File, Decision Log, Rationale | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | LeanProblem solvingCoachingOperations | ArchitectureRationaleDocumentationGovernance | ArchitectureDocumentationCommunication |