Major retailers are today, most notably Amazon, are creating and operating their own advertising platforms — and they’re making millions doing it. McKinsey estimates that by 2026, retail media will add $1.3 trillion to enterprise values in the U.S. alone, with profit margins between 50% and 70%. In this article, the authors introduce readers to the main kinds of retail media, discuss three strategic challenges that they present, and provide guidance for effectively managing those challenges.