Retail media network technology adoption stalled by legacy budget cycles

The disconnect between available adtech and organizational execution creates a 'squeezed middle' of retailers who lack the scale of Amazon or the agility of specialists. For the streaming ecosystem, this highlights that technical capability is secondary to change management; even superior AI-driven forecasting cannot overcome a rigid annual budget clock. As Publicis and LiveRamp push for deeper identity integration, the market will likely bifurcate between those owning their data stacks and those relying on aggregators like Criteo to maintain agency attention. Watch for whether mid-tier retailers shift toward 'sand' strategies by aggregating their inventory to avoid the technical debt of custom builds, a trend already seen as retail media network video ads expand into CTV and other emerging formats.

Retail media network technology spending is accelerating across the sector, yet the gap between top-tier operators and mid-market retailers continues to widen. Amazon's retail media business generated over $56 billion in global ad revenue in 2025, establishing a benchmark that smaller networks cannot match through organic growth alone. Walmart Connect and Target's Roundel have followed with proprietary demand-side platforms and clean-room integrations, but mid-tier retailers increasingly rely on white-label solutions from Criteo and CitrusAd to reach minimum viable scale without building custom infrastructure. GrowthLoop, which positions itself as a composable alternative to legacy ad servers, has expanded its partnerships with grocery and home-improvement chains seeking to unify first-party data with programmatic activation.

The business-model tension between build and buy is intensifying as identity deprecation reshapes the retail media landscape. LiveRamp's RampID has become a default identity layer for many networks that lack the engineering resources to maintain their own deterministic graphs, while Publicis Groupe's CoreAI platform now integrates retail media planning directly into its agency workflow, effectively reducing the number of independent buying decisions a retailer's ad stack must support. Epsilon's acquisition by Publicis in 2019 continues to pay dividends here, giving the holding group proprietary identity resolution that competitors must license. Meanwhile, the Co-op Media Network in the UK and Threefold in Australia represent a growing cohort of grocery-led networks that have chosen managed-service models over full technology ownership, trading margin for speed to market.

Technical benchmarks from marketers adopt unified measurement strategies underscore why legacy ad servers remain a bottleneck for retail media network technology modernization. A 2025 IAB survey found that 62% of retail media operators still rely on ad servers originally designed for display publishers, resulting in forecast accuracy gaps of 15% to 30% for retail-specific formats like sponsored product and on-site display. Criteo's Commerce Media Platform reported processing over 200 billion daily bid requests across its retail partner network in Q2 2026, demonstrating the scale advantage that aggregation platforms hold over individual mid-tier networks attempting to build equivalent throughput. The emerging "RMN in a box" category, which bundles identity, measurement, and activation into a single subscription, is attracting retailers with annual ad revenue below $50 million who cannot justify the $2 million to $5 million capital expenditure required for a custom composable stack. SMG and other independent agencies are advising clients to adopt these packaged solutions as a bridge strategy until their data infrastructure matures enough to support direct integrations with demand-side platforms.