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Selected:LASR (Lightweight Approach for Software Reviews)Fault IsolationA3 Problem SolvingHypothesis-Driven Troubleshooting
| Criterion |  Architecture LASR (Lightweight Approach for Software Reviews) |  Engineering Fault Isolation |  Operations A3 Problem Solving |  Engineering Hypothesis-Driven Troubleshooting |
|---|---|---|---|---|
Purposedifferent | 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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 3–4 h for initial assessment; preparation and deeper analysis additional | 30-180 min | 45-90 min | 30-240 min |
Participantsdifferent | 1 or a small team; particularly suitable for 3–4 people | 1-6 | 2-5 | 1-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 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 | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | A3 Report, Action Plan, Root Cause Analysis | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary |
Tagsno overlap | ArchitectureQualityRiskAssessmentLean | TroubleshootingDiagnosisEngineering | LeanProblem solvingCoachingOperations | TroubleshootingProblem solvingDiagnosis |