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| Criterion |  Operations 8D Problem Solving |  Architecture SAAM (Software Architecture Analysis Method) |  UX Research Affinity Diagramming |  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. | SAAM helps teams judge an architecture’s suitability for selected tasks and changes. It is particularly useful for examining modifiability and comparing architecture alternatives with clear reasoning. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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 | High | Low | Low |
Timedifferent | 1-6 Wochen | Preparation, scenario analysis, and findings review; effort depends on scope | 45–90 min | 15-30 min |
Participantsdifferent | 4-10 | Architecture experts and stakeholders for scenarios and weighting | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Domain functions mapped to components and connections, Quality attributes and evaluation criteria, Typical tasks and their effects on the architecture, Reasoned evaluation or comparison of alternatives | Theme clusters, Insight statements, Opportunity areas | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | ArchitectureChangeAnalysisComparisonQuality | SynthesisQualitativeRoot cause | Root causeIncidentLeanProblem solving |