A Practical Guide to Retail Media

Retail media has moved past the phase where it needed explaining to a skeptical marketing team. It’s now a standing line item in most consumer brand budgets, and the questions have shifted from whether to invest in it to how to run it well across a channel that now touches on-site search results, ads served across the open web using retailer data and, increasingly, the television in someone’s living room.

What makes retail media different

A retail media network sells advertising built on data no other channel has: what a specific shopper bought, not just what they browsed or claimed to be interested in. That distinction matters in three concrete ways. Targeting and measurement are grounded in real purchase history rather than inferred behavior, which makes them far more reliable than cookie-based advertising ever was. The ad reaches someone at or near the moment of purchase, often with a payment method already saved and a cart already open, which is about as high-intent as advertising gets. And because the retailer can see the actual sale, it can report which specific ad impressions led to a specific purchase, a closed loop that search and social advertising can only approximate through modeling.

The three layers of the channel

On-site placements, sponsored product listings and search results inside a retailer’s own app or website, still capture the largest share of spend because they convert best: you’re reaching someone who’s already shopping. Off-site placements use a retailer’s shopper data to reach the same customers elsewhere, across the open web and increasingly connected TV, extending retail-grade targeting beyond the retailer’s own property. Walmart’s acquisition of Vizio, which closed late last year, is now feeding real connected-TV inventory into Walmart Connect, giving the channel a genuine foothold in a format that used to belong entirely to traditional media buying. In-store formats, digital shelf screens and in-store audio, remain the smallest and least mature layer, but for brands with strong physical shelf presence they’re closing the last visible gap between an ad and a purchase.

What’s new this year

Generative AI tools for producing ad creative directly inside retail ad platforms have gone from an experimental feature to something most major networks now offer as standard, letting a brand generate product imagery and ad variations without a separate production cycle. That’s meaningfully lowered the cost of testing more creative variations, which matters because creative quality increasingly separates strong campaigns from average ones once basic targeting is table stakes. Data clean rooms, which let a brand and a retailer analyze combined data without either side exposing raw customer records to the other, have also moved from pilot programs at a handful of large advertisers into a much more standard part of how serious retail media programs measure incrementality.

Running it without wasting spend

• Fix the product listing before spending on ads against it. On retail media, the listing itself functions as the landing page, and strong titles, images, reviews and in-stock status do more for conversion than bid adjustments ever will.
• Separate demand capture from demand creation in how you measure. On-site sponsored placements capturing existing search intent should be judged on return on ad spend; off-site and connected-TV placements meant to create new demand need to be judged on new-to-brand sales instead, or they’ll look artificially weak.
• Use clean-room data to test incrementality, not just to build a nicer dashboard. The real value is confirming which impressions added a sale rather than simply claiming credit for one that would have happened regardless.
• Concentrate rather than spread thin. Running two networks with real optimization still beats running six superficially, and that discipline matters more, not less, as the number of available networks keeps growing.

Where this is heading

Retail media’s growth this year has been driven less by new advertisers discovering the channel and more by existing advertisers deepening their investment as the tooling matures around them. As AI-assisted creative, clean rooms and connected-TV inventory all become standard rather than experimental, the gap is widening between brands running retail media as a disciplined, measured program and those still treating it as an extension of search budget with a different login screen.