Retail Media's Measurement Problem: Why Advertisers Are Pushing Back on Closed-Loop Attribution

Forrester analyst Nikhil Lai argues that retail media networks' reliance on proprietary, closed-loop attribution models is creating a trust deficit with brand advertisers who cannot reconcile ROAS claims across networks. The post highlights growing demand for third-party measurement validation and standardized incrementality testing. It positions this tension as the defining challenge for retail media's maturation into a true media channel.

Forrester analyst Nikhil Lai argues that retail media networks' reliance on proprietary, closed-loop attribution models is creating a trust deficit with brand advertisers who cannot reconcile ROAS claims across networks. The post highlights growing demand for third-party measurement validation and standardized incrementality testing. It positions this tension as the defining challenge for retail media's maturation into a true media channel.