Retail media networks outmuscle legacy channels with data-fueled profits

Oct 17, 2025 | Marketing

Retail media network advertising isn’t just the new kid on the block—it’s already pulling in adult-size revenue. According to GroupM’s January 2024 forecast, global spend on retail media will jump 20 % this year, topping $140 billion—more than all print and radio combined. Blink, and another supermarket, marketplace, or pharmacy chain is launching its own ad platform. Here’s why decision-makers can’t afford to ignore the fastest-growing slice of digital marketing pie.

Why are brands rushing into retail media networks?

Marketers have three words on their lips: first-party data. When third-party cookies disappear from Chrome in Q1 2025, brands will lose a critical targeting crutch. Retailers—from Amazon Ads in Seattle to Carrefour Links in Paris—sit on mountains of shopper insight collected at checkout and online. Suddenly, those loyalty-card swipes translate into laser-focused ad impressions.

The financial carrot is equally tempting. Walmart Connect reported $3.4 billion in ad revenue for FY 2023, up 30 % YoY. Kroger Precision Marketing, launched in Cincinnati only six years ago, already drives a mid-nine-figure topline. For retailers, margins on ad inventory can hit 70 %, dwarfing the razor-thin profits of selling cereal. For brands, placements inside a retail media network outperform social ads by 2.5× in average ROAS, according to Skai’s July 2023 benchmark report.

Bucket brigade: want more proof?

• 58 % of U.S. CPG marketers increased retail media budgets in 2024 (IAB survey).
• In the U.K., Tesco’s “de-cookie-fied” campaigns lifted incremental sales by 15 % versus control stores.
• Mercado Libre Ads now reaches 19 markets in Latin America, illustrating the model’s global stretch.

What is a retail media network and how does it work?

A retail media network (RMN) is an advertising platform operated by a retailer that sells ad inventory on its own digital and physical properties—think banner space on the e-commerce site, sponsored product listings in the mobile app, or digital screens near the deli aisle. Because the retailer owns both the inventory and the shopper data, it can match ads to real purchase behavior and report closed-loop sales attribution. In plain English: it shows your ad, sees who bought, and tells you exactly how many extra shampoo bottles walked out the door because of that impression.

Here’s the typical flow:

  1. The brand uploads creative and selects audience segments (e.g., “organic-loving millennials in zip codes 900–902”).
  2. The RMN deploys ads across on-site search, display, email, or in-store DOOH (digital out-of-home) screens.
  3. Post-campaign, the RMN matches exposure data to transactional records and spits out incremental sales, ROAS, and new-to-brand buyers.

Because RMNs bypass third-party cookies, they’re already future-proof for the privacy era—no device IDs needed, only shopper IDs inside the retailer’s walled garden.

Building a winning retail media strategy: 5 pragmatic moves

Feeling the FOMO? Good. But don’t spray dollars without a plan. Below are five field-tested tactics I refined while advising mid-market CPG clients in 2023.

1. Start with search, then layer display

Sponsored search listings capture bottom-funnel intent—people already hunting for ketchup or cat food. Once you’re profitable there, graduate to display or video for upper-funnel awareness. It’s the same crawl-walk-run progression Amazon sellers mastered a decade ago.

2. Exploit look-alike baskets, not demographics

Why target “women 25–44” when you can target “shoppers who buy oat milk and cruelty-free shampoo every two weeks”? Retail algorithms excel at basket-based affinities; let them do the heavy lifting.

3. Test in at least two networks

Performance varies wildly. One beverage client saw a 9 : 1 ROAS on Target Roundel but only 3 : 1 on Instacart Ads. Cross-testing keeps your CFO happy and your media mix diversified.

4. Sync creative with shelf context

A banner touting “new family-size pack” makes sense on a high-traffic category page but bombs in a convenience-store app. Tailor copy and aspect ratio to each digital shelf.

5. Demand transparent, SKU-level reporting

Don’t accept vanity metrics. Ask for incremental sales versus matched control groups, broken down by UPC. Walmart, Albertsons Media Collective, and Boots Media Group now offer this granularity—use it.

On one hand, data goldmine; on the other, privacy minefield

Let’s inject nuance. While the retail media network boom looks unstoppable, watchdogs are circling. In July 2023, the U.S. Federal Trade Commission fined Amazon $30.8 million over Alexa voice data mishandling, signaling tougher scrutiny of how commerce giants monetize consumer information. The EU’s Digital Markets Act, fully enforceable in March 2024, could force “gatekeepers” to share anonymized metrics with smaller advertisers, slimming profit margins.

Moreover, retailers risk brand fatigue. A November 2023 Ipsos poll found 42 % of shoppers felt “overwhelmed” by sponsored placements crowding search results. On one hand, more real estate means more revenue; on the other, clutter erodes user trust—ask Facebook circa 2012.

Smart marketers hedge. They negotiate frequency caps, insist on ad load limits, and diversify into complementary channels like connected TV (CTV) or branded podcasts. Meanwhile, retailers invest in privacy-enhancing tech—clean rooms, differential privacy—to reassure regulators and public opinion alike.

Can small businesses play, or is retail media only for deep pockets?

Short answer: yes, you can play—if you pick your battles. Minimum spends on mature platforms like Amazon Ads can be as low as $50 per day. Regional grocers such as Ahold Delhaize’s Peapod Digital Labs offer self-service dashboards, perfect for challenger brands. Pro tip: piggyback on seasonal co-op budgets; many retailers let suppliers tap joint-marketing funds that slash effective CPMs by 30–50 %.

Key KPIs to track (cheat sheet)

ROAS (Return on Ad Spend) – Still king.
Incremental sales – True lift, not cannibalized purchases.
New-to-brand buyers – Vital for growth categories like plant-based meats.
Share of voice – Your visibility vs. competitors within category pages.
Off-platform halo – Measure search lift on Google or TikTok after running RMN campaigns.

Keep a living dashboard. Update weekly. Small tweaks—bid modifiers, day-parting—compound fast.


I’ve watched the retail media wave swell from the side lines of trade-show panels in Las Vegas to crowded strategy rooms in São Paulo. The marketers who thrive are those who treat RMNs not as a magic bullet but as one thread in a resilient omnichannel fabric. Test quickly, measure brutally, and respect your customer’s scroll. Do that, and you’ll turn every digital aisle into a profit center—and have fun while you’re at it.

Ready to keep exploring smarter marketing moves? Stick around—I’m just getting warmed up.