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Selected:A3 Problem SolvingSmoke TestARID (Active Reviews for Intermediate Designs)Assumption Mapping
| Criterion |  Operations A3 Problem Solving |  Product Discovery Smoke Test |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 45-90 min | 1-5 Tage | 2–4 h review as a planning range; preparation and evaluation additional | 45-60 min |
Participantsdifferent | 2-5 | Nutzertraffic | Designers, developers as users, and facilitation | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Interest Metrics, Conversion Signal, Learning Note | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | LeanProblem solvingCoachingOperations | ValidationExperimentsDemandGrowth | ArchitectureEngineeringFeedbackValidationTasks | AssumptionsRiskExperimentsValidation |