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| Criterion |  Operations A3 Problem Solving |  Product Discovery Learning Card |  Domain Modeling EventStorming |  Product Discovery Product Kata |
|---|---|---|---|---|
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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When a domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | Product Kata helps clarify customer problems, solution ideas, and evidence through a repeatable improvement routine. It captures direction, current metric, target metric, experiment notes, and learning. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 45-90 min | 25-40 min | 2-8 h | 1-2 Wochen je Loop |
Participantsdifferent | 2-5 | 1-5 | 5-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Learning Card with evidence and next action | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Direction, Current metric, Target metric, Experiment note, Learning report |
Tagsno overlap | LeanProblem solvingCoachingOperations | ExperimentsValidationDiscoveryLearning | Domain-Driven DesignEventsDiscoveryWorkshop | OutcomesDiscoveryLearningIterationCoaching |