Published on August 1, 2025 | By Sarah Mitchell, Digital Marketing Correspondent

The digital advertising industry is no stranger to disruption. From the early days of banner ads to the rise of social media influencers, brands have constantly adapted to meet consumers where they are. In 2025, the next frontier is taking shape: Retail Media Networks (RMNs).

These networks, built on the vast consumer data of retailers, are emerging as one of the most powerful tools for advertisers seeking precision targeting, measurable ROI, and direct access to purchase-ready audiences.

A Billion-Dollar Shift in Ad Spend

Retail Media Networks are no longer experimental. According to the Interactive Advertising Bureau (IAB), global ad spend on RMNs is expected to surpass $160 billion by the end of 2025, marking a 24% increase from 2024.

“RMNs have transformed retail from being just a distribution channel to becoming a full-fledged media powerhouse,” says Laura Bennett, an e-commerce strategist at GlobalAd Insight. “Amazon paved the way, but now players like Walmart, Carrefour, and even niche marketplaces are turning their customer data into advertising gold.”

This rapid growth is fueled by two key factors:

• The decline of third-party cookies, pushing advertisers toward platforms with rich first-party data
• The rise of omnichannel shopping, blurring the lines between online and offline retail

The Retail Advantage: First-Party Data at Scale

Unlike traditional ad platforms, RMNs sit directly on top of the purchase funnel. They don’t just know what customers search for—they know what they buy, how often, and at what price points.

Consider Walmart Connect, which integrates online browsing habits with in-store purchase data. This allows brands to create campaigns that target not just “shoppers interested in sports shoes” but “loyal customers who buy running shoes every 3 months.”

“Retail Media is about closing the loop,” says Omar Khalid, Head of Digital Strategy at AdScope Consulting. “We’re not just creating awareness. We’re connecting ads directly to sales.”

Opportunities for Small and Medium Businesses

One of the most promising aspects of RMNs is their accessibility. While large brands have dominated the space initially, new self-serve platforms are opening doors for small and medium-sized businesses (SMBs) to compete on a level playing field.

For instance, Carrefour Links in Europe offers small suppliers affordable ad placements based on precise audience targeting. Similarly, Instacart’s ad platform allows local food brands to reach customers in specific neighborhoods.

This democratization of access could be a game-changer for SMBs in emerging markets.

Challenges Ahead: Measurement, Competition, and Integration

Despite their promise, RMNs are not without challenges. Measuring performance across multiple retail networks remains complex. Advertisers must navigate different reporting systems, attribution models, and inventory options.

Moreover, as more retailers launch networks, competition for ad space will intensify—driving up costs and requiring smarter bidding strategies.

Finally, integrating RMN campaigns into broader digital marketing strategies is still a work in progress. Brands will need seamless systems to coordinate retail ads with search, social, and programmatic buys.

The Future of RMNs in 2025 and Beyond

With more retailers launching ad networks—from fashion brands to grocery chains—the RMN landscape is set to expand further. Analysts predict retail media could account for 25% of total digital ad spend by 2027.

For brands willing to adapt, RMNs represent an unparalleled opportunity: direct access to high-intent audiences, measurable outcomes, and the ability to bridge the gap between awareness and purchase.

As Sarah Bennett, CMO of a leading CPG brand, puts it:

“Retail Media isn’t just another channel—it’s where sales and storytelling finally meet.”