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| Criterion |  Operations Gemba Walk |  Operations 5 Whys |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. | 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 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 | Low | Low | Medium | High |
Timedifferent | 30-120 min | 15-30 min | 3–4 h for initial assessment; preparation and deeper analysis additional | 1-6 Wochen |
Participantsdifferent | 2-6 | 2-6 | 1 or a small team; particularly suitable for 3–4 people | 4-10 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Root cause notes, Countermeasures | 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 | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanObservationProcessOperations | Root causeIncidentLeanProblem solving | ArchitectureQualityRiskAssessmentLean | QualityProblem solvingRoot cause |