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Selected:LASR (Lightweight Approach for Software Reviews)After-Action ReviewA3 Problem Solving5 Whys
| Criterion |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations After-Action Review |  Operations A3 Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
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. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | 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. | 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 | Medium | Low | Medium | Low |
Timedifferent | 3–4 h for initial assessment; preparation and deeper analysis additional | 20-45 min | 45-90 min | 15-30 min |
Participantsdifferent | 1 or a small team; particularly suitable for 3–4 people | 3-12 | 2-5 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
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 | Lessons learned, Action items, Event summary | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureQualityRiskAssessmentLean | LearningOperationsImprovement | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving |