Retail Media Networks Explained: Why Amazon, Walmart & Uber Are Winning Ad Dollars

Retail media networks have quietly become one of the most important forces in advertising.In this episode, Kelly and Sean break down what retail media actually is, why it’s growing, and where it may be heading next.At its core, a retail media network allows retailers to sell advertising using their own customer data—whether that’s on their website, app, or even in-store screens. Companies like Amazon, Walmart, and Target are leading the way, using shopper behavior to deliver highly targeted ads.But the real story is in the growth.Retail media accounted for roughly 15% of total U.S. media growth last year, making it one of the most impactful drivers in the industry.So why is it working?Two major factors:High purchase intent – Ads reach consumers already in buying modeClosed-loop measurement – Platforms can directly connect ad exposure to purchasesFrom an advertiser perspective, that combination is hard to ignore.The episode also explores how the space is evolving:Key trends shaping retail mediaAmazon continues to dominate, driving about 40% of retail media ad revenueTraditional retailers like Walmart, Kroger, and Target remain strongNew entrants—like Uber, Instacart, and airlines—are entering the spaceOver 50 large-scale retail media networks now exist in the U.S.At the same time, signs of maturity are starting to appear:Fewer new network launches in 2026Slowing user growth as adoption approaches saturationIncreased competition for the same audiencesSo where does growth come from next?Sean outlines three emerging directions:Offsite advertising – Using retail data to sell ads beyond owned platformsAudience matching & data partnerships – Expanding targeting capabilitiesContinued expansion from existing players – Rather than new entrantsThe takeaway: retail media isn’t slowing—but it is changing.Key TopicsWhat retail media networks are (simple explanation)Why brands are shifting budgets into retail mediaAmazon’s dominance and growth outlookThe rise of Walmart, Kroger, and big-box playersNew entrants like Uber, Instacart, and airlinesWhy closed-loop attribution is driving adoptionThe rapid growth in retail media networks (50+ in the U.S.)Signs of market maturity and saturationWhat’s changing in 2026Future growth drivers: offsite, data partnerships, audience targetingChapters00:00 Intro & Trader Joe’s story03:10 What is a retail media network?05:38 Why retail media is growing08:01 Key advantages: targeting + attribution09:49 Major players (Amazon, Walmart, grocery)11:18 Growth of new entrants (Uber, Instacart, airlines)12:22 Market saturation & slowing expansion13:37 User growth limits14:46 Future growth strategies19:04 Key takeaways19:29 Closing thoughtsIf you’d like access to the benchmark report or want to suggest a topic for the next part of the programmatic series, reach out to [email protected] you enjoyed this episode, be sure to follow or subscribe so you don’t miss future conversations on advertising, media strategy, and cultural marketing moments.And if you’re listening on Apple Podcasts or Spotify, a quick rating or review helps more people discover the show.