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| Criterion |  Product Discovery Problem Interview |  Delivery Communication Plan |  Architecture ARID (Active Reviews for Intermediate Designs) |  Architecture C4 Model |
|---|---|---|---|---|
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. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-60 min je Interview | 45-90 min | 2–4 h review as a planning range; preparation and evaluation additional | 1-4 h |
Participantsdifferent | 5-12 Interviews | 2-6 | Designers, developers as users, and facilitation | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Communication Plan, Channel Matrix, Message Cadence | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | DiscoveryInterviewsValidation | CommunicationStakeholdersDeliveryPlanning | ArchitectureEngineeringFeedbackValidationTasks | ArchitectureCommunicationVisualization |