Why Incrementality Tests Are the Only Truth in Marketing

Lucas and Luna dive into why incrementality testing is the only reliable way to measure true ad impact, using Amazon's 2021 shadow-ban experiment and Uber's 2024 geo-testing results as concrete examples. They explain how standard attribution models overcredit channels that merely appear coincident with conversions, while incrementality isolates the actual lift. They walk through the mechanics of a matched-market test, discuss the statistical power needed to detect small effects, and share how a mid-size DTC brand saved $2.3 million annually by cutting non-incremental spend. The episode ends with practical advice on when to invest in incrementality vs. when simpler heuristics suffice. Produced by the Fexingo Business podcast network. #IncrementalityTesting #MarketingAttribution #AdMeasurement #MarketingAnalytics #Amazon #Uber #DTCBrands #MatchedMarketTest #GeoTesting #AdLift #MarketingROI #AttributionModeling #MediaMixModeling #CampaignMeasurement #FexingoBusiness #BusinessPodcast #MarketingPodcast #DataDrivenMarketing Keep every episode free: buymeacoffee.com/fexingo