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| Criterion |  Operations 8D Problem Solving |  Operations Scatter Diagram |  Architecture Software Architecture Canvas |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | The Software Architecture Canvas reduces a system to the most important architecture decisions, constraints, and interfaces. It is useful when teams need a resilient overall picture quickly. | 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. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 1-6 Wochen | 30-90 min | 1-2 h | 15-30 min |
Participantsdifferent | 4-10 | 1-4 | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Architecture Canvas, Goals, Constraints, Quality Attributes | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeQualityVisualization | CanvasArchitectureAlignmentWorkshop | Root causeIncidentLeanProblem solving |