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| Criterion |  UX Research User Interviews |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations Change Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 | Low | Medium | Medium | Low |
Timedifferent | 30–60 min per interview | 3–4 h for initial assessment; preparation and deeper analysis additional | 45-120 min | 15-30 min |
Participantsdifferent | 1 participant per interview | 1 or a small team; particularly suitable for 3–4 people | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | 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 | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Root cause notes, Countermeasures |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ArchitectureQualityRiskAssessmentLean | ChangeRoot causeTroubleshootingComparison | Root causeIncidentLeanProblem solving |