RMNs have evolved far beyond a specialist channel into a core part of modern media planning. In this buyer’s guide, we explain what they really are, how they differ and how buyers can separate effective infrastructure from expensive noise.
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“Commerce media isn’t a channel any more – it’s how media works.” That line, from The Drum’s All Media Is Commerce Media TV series, captures the shift perfectly. Retail media networks (RMNs) didn’t just grow quickly; they rewired expectations across the entire media ecosystem by solving one thing exceptionally well: attribution.
But rapid growth has also created confusion. Hundreds of RMNs now compete for budget, all promising access to high-intent shoppers and closed-loop measurement. For buyers, the question is no longer whether to invest in retail media – it’s where, how and with what expectations.
Drawing on our reporting from CES, NRF and conversations with retailers, platforms and advertisers, this Commerce Media for Drummies guide offers a practical framework for evaluating RMNs: what matters, what doesn’t and what signals indicate long-term value versus short-term performance theater.
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A retail media network is a retailer’s advertising business, built on first-party shopper data and media inventory across:
The promise is simple: reach people who buy – and prove it.
RMNs solved three problems at once:
They turned retailers into media owners and merchants into marketers.
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Scale alone doesn’t make an RMN effective. Buyers should ask:
Many networks sell inventory. Fewer sell outcomes.
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The next phase isn’t to launch more networks (more than 200 retail media networks now compete for advertiser attention); rather the focus should be on:
RMNs that stay tactical risk becoming a tax. Those that integrate into brand strategy become indispensable.
Retail media networks aren’t interchangeable. The ones worth buying into behave like infrastructure – interoperable, measurable and aligned to how brands actually grow. If an RMN can’t explain its role beyond high intent, it’s probably selling convenience, not outcomes.
Buy the ones that: