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Selected:A3 Problem SolvingArchitecture Decision RecordFailure Mode and Effects AnalysisFishbone Diagram
| Criterion |  Operations A3 Problem Solving |  Architecture Architecture Decision Record |  Operations Failure Mode and Effects Analysis |  Operations Fishbone Diagram |
|---|---|---|---|---|
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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 45-90 min | 15-45 min | 2-6 h | 30-60 min |
Participantsdifferent | 2-5 | 1-3 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | ADR File, Decision Log, Rationale | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureRationaleDocumentationGovernance | RiskQualityOperationsRoot cause | Root causeQualityOperations |