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| Criterion |  Operations Gemba Walk |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Innovation SCAMPER |  Innovation Reverse Brainstorming |
|---|---|---|---|---|
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. | 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. | For an existing solution under pressure to change, the method deliberately opens space for systematic variants. It directs attention to rebuilding, combining, and repurposing rather than only new basic ideas. This produces concrete evolution paths for products, offerings, or workflows. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. |
Complexitydifferent | Low | High | Low | Low |
Timedifferent | 30-120 min | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 30-60 min |
Participantsdifferent | 2-6 | Evaluation team, architects, and relevant stakeholders | 2-10 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | SCAMPER Idea List, Concept Shortlist, Variation Notes | Reverse Ideas, Risk Themes, Solution Ideas |
Tagsno overlap | LeanObservationProcessOperations | ArchitectureQualityRiskTradeoffsStakeholders | BrainstormingIdeationCreativityReframingInnovation | BrainstormingIdeationCreativityRisk |