Retail media is having a moment. Actually, that undersells it. U.S. advertisers spent $60.32 billion on retail media in 2025, and eMarketer forecasts that number will rise to $71.09 billion in 2026. IAB says commerce media remains the fastest-growing digital advertising channel, even as growth begins to mature. In other words, this is no fad. It is now a serious line item in the supplier budget.