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| Criterion |  Operations Gemba Walk |  Architecture SAAM (Software Architecture Analysis Method) |  Operations 5 Whys |
|---|---|---|---|
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. | SAAM helps teams judge an architecture’s suitability for selected tasks and changes. It is particularly useful for examining modifiability and comparing architecture alternatives with clear reasoning. | 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 | High | Low |
Timedifferent | 30-120 min | Preparation, scenario analysis, and findings review; effort depends on scope | 15-30 min |
Participantsdifferent | 2-6 | Architecture experts and stakeholders for scenarios and weighting | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Domain functions mapped to components and connections, Quality attributes and evaluation criteria, Typical tasks and their effects on the architecture, Reasoned evaluation or comparison of alternatives | Root cause notes, Countermeasures |
Tagsno overlap | LeanObservationProcessOperations | ArchitectureChangeAnalysisComparisonQuality | Root causeIncidentLeanProblem solving |
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