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| Criterion |  Agile WSJF |  Architecture C4 Model |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When many tasks compete for the same capacity, it orders work by economic impact. It makes time lost, benefit, and effort comparable together. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | High | Low | Low | High |
Timedifferent | 45-90 min | 1-4 h | 15-30 min | 1-6 Wochen |
Participantsdifferent | 3-10 | 1-5 | 2-6 | 4-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Ranked Backlog, Cost-of-Delay Assumptions | Context Diagram, Container Diagram, Component Diagram | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanEconomicsSequencePrioritization | ArchitectureCommunicationVisualization | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |