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| Criterion |  Product Discovery Problem Interview |  Knowledge Modeling Event Modeling |  Domain Modeling EventStorming |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | Event Modeling connects business workflows with commands, events, and views into one coherent mental model. It helps design behavior, UI, and technical slices from the same underlying logic. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-60 min je Interview | 2-6 h | 2-8 h | 25-40 min |
Participantsdifferent | 5-12 Interviews | 2-8 | 5-12 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Event Model, UI Flow, Commands, Read Models | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Learning Card with evidence and next action |
Tagsno overlap | DiscoveryInterviewsValidation | EventsBlueprintDomain-Driven DesignBehavior | Domain-Driven DesignEventsDiscoveryWorkshop | ExperimentsValidationDiscoveryLearning |