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Selected:A/B Testing Pirate Metrics AARRR Architecture Decision Record ARID (Active Reviews for Intermediate Designs)

Criterion	Growth A/B Testing	Growth Pirate Metrics AARRR	Architecture Architecture Decision Record	Architecture ARID (Active Reviews for Intermediate Designs)
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.	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.
Complexitydifferent	High	Medium	Low	Medium
Timedifferent	1-4 Wochen	1-2 h Setup, laufend	15-45 min	2–4 h review as a planning range; preparation and evaluation additional
Participantsdifferent	1-6	2-8	1-3	Designers, developers as users, and facilitation
Formatdifferent	Async	Workshop + async	Async	Workshop + async
Outputdifferent	Experiment results, Decision log, Learning summary	AARRR funnel, Metric baseline, Experiment backlog	ADR File, Decision Log, Rationale	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions
Tagsno overlap	ExperimentsGrowthAnalyticsValidation	GrowthMetricsExperiments	ArchitectureRationaleDocumentationGovernance	ArchitectureEngineeringFeedbackValidationTasks

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