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Selected:C4 ModelOpportunity InterviewARID (Active Reviews for Intermediate Designs)Problem Interview
| Criterion |  Architecture C4 Model |  Product Discovery Opportunity Interview |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Problem Interview |
|---|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | 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 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 1-4 h | 30-60 min je Interview | 2–4 h review as a planning range; preparation and evaluation additional | 30-60 min je Interview |
Participantsdifferent | 1-5 | 5-12 Interviews | Designers, developers as users, and facilitation | 5-12 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Interview Notes, Opportunity Themes, Customer Quotes | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ArchitectureCommunicationVisualization | DiscoveryInterviewsOpportunityCustomer | ArchitectureEngineeringFeedbackValidationTasks | DiscoveryInterviewsValidation |