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| Criterion |  Operations Gemba Walk |  UX Research Personas |  UX Research User Interviews |  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 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. | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 | Low | Medium |
Timedifferent | 30-120 min | 1-3 Tage | 30–60 min per interview | 45-90 min |
Participantsdifferent | 2-6 | Internes Team | 1 participant per interview | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Persona Profiles, Needs Summary, Scenario Notes | Interview Notes, Themes, Insight Summary | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | LeanObservationProcessOperations | ResearchCustomerSynthesis | QualitativeResearchCustomerDiscovery | LeanProblem solvingCoachingOperations |