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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Growth Pirate Metrics AARRR |  Product Discovery Test Card |  Growth A/B Testing |
|---|---|---|---|---|
Purposedifferent | 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. | For products with complex usage paths, overall growth alone is too coarse to reveal bottlenecks. Pirate Metrics breaks the relationship with the product into consecutive stages and shows where the funnel actually leaks. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 1-2 h Setup, laufend | 20-35 min | 1-4 Wochen |
Participantsdifferent | Designers, developers as users, and facilitation | 2-8 | 1-5 | 1-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | AARRR funnel, Metric baseline, Experiment backlog | Test Card with a pre-set threshold | Experiment results, Decision log, Learning summary |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | GrowthMetricsExperiments | ExperimentsValidationDiscoveryHypothesis | ExperimentsGrowthAnalyticsValidation |