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| Criterion |  Operations Gemba Walk |  Product Discovery Opportunity Interview |  UX Research Personas |  Operations A3 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. | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-120 min | 30-60 min je Interview | 1-3 Tage | 45-90 min |
Participantsdifferent | 2-6 | 5-12 Interviews | Internes Team | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Interview Notes, Opportunity Themes, Customer Quotes | Persona Profiles, Needs Summary, Scenario Notes | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | LeanObservationProcessOperations | DiscoveryInterviewsOpportunityCustomer | ResearchCustomerSynthesis | LeanProblem solvingCoachingOperations |