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Selected:Fault Tree AnalysisLASR (Lightweight Approach for Software Reviews)Affinity Diagramming8D Problem Solving
| Criterion |  Operations Fault Tree Analysis |  Architecture LASR (Lightweight Approach for Software Reviews) |  UX Research Affinity Diagramming |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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 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 | Medium | Low | High |
Timedifferent | 2-6 h | 3–4 h for initial assessment; preparation and deeper analysis additional | 45–90 min | 1-6 Wochen |
Participantsdifferent | 3-8 | 1 or a small team; particularly suitable for 3–4 people | 3-10 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Theme clusters, Insight statements, Opportunity areas | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | RiskRoot causeSafety | ArchitectureQualityRiskAssessmentLean | SynthesisQualitativeRoot cause | QualityProblem solvingRoot cause |