Retail & E-commerce
A measurable answer to a noisy market
Platform-reported return on ad spend added up to more revenue than the business had booked. Nobody could say which channel was borrowing credit from which.
Geo holdouts on the three largest channels, then a mix model calibrated against those results. Budget moved on the causal estimates, not the dashboards, and the reporting was rebuilt to show both numbers side by side.
Performance Advertising, Measurement