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| Criterion |  Growth A/B Testing |  Growth Pirate Metrics AARRR |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | 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. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 h Setup, laufend | 15-45 min |
Participantsdifferent | 1-6 | 2-8 | 1-3 |
Formatdifferent | Async | Workshop + async | Async |
Outputdifferent | Experiment results, Decision log, Learning summary | AARRR funnel, Metric baseline, Experiment backlog | ADR File, Decision Log, Rationale |
Tagsno overlap | ExperimentsGrowthAnalyticsValidation | GrowthMetricsExperiments | ArchitectureRationaleDocumentationGovernance |
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