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Selected:Gemba WalkAssumption SurfacingATAM (Architecture Tradeoff Analysis Method)Standard Work Analysis
| Criterion |  Operations Gemba Walk |  Decision Making Assumption Surfacing |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Standard Work Analysis |
|---|---|---|---|---|
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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. |
Complexitydifferent | Low | Low | High | Medium |
Timedifferent | 30-120 min | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 1-3 h |
Participantsdifferent | 2-6 | 2-8 | Evaluation team, architects, and relevant stakeholders | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Assumption List, Critical Assumptions, Learning Plan | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Standard Work Sheet, Deviation List, Improved Standard, Training Needs |
Tagsno overlap | LeanObservationProcessOperations | AssumptionsRiskDecisionDiscovery | ArchitectureQualityRiskTradeoffsStakeholders | LeanProcessQuality |