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| Criterion |  Growth Funnel Analysis |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations Root Cause Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When many visitors or users drop off along the way, the reason behind the number often stays hidden. Funnel Analysis exposes these transitions and makes visible exactly where the path collapses. | 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 a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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 | Medium | Medium | Low |
Timedifferent | 1-3 h | 3–4 h for initial assessment; preparation and deeper analysis additional | 1-4 h | 15-30 min |
Participantsdifferent | 1-5 | 1 or a small team; particularly suitable for 3–4 people | 3-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Funnel report, Drop-off analysis, Optimization hypotheses | 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 | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | AnalyticsConversionGrowth | ArchitectureQualityRiskAssessmentLean | Root causeProblem solvingQualityIncident | Root causeIncidentLeanProblem solving |