Commerce media is no longer judged only by how many shoppers a network can reach. GrowthLoop’s September 30 Commerce Media Investment Index, conducted with Ascend2, points to a sharper buying criterion: how fast a network can turn audience intent into an active campaign and usable evidence. The study surveyed 291 U.S. and Canadian marketers involved in retail media network or commerce media network decisions.
The headline is not simply that budgets are growing. The more useful signal is friction. GrowthLoop says 86% of advertisers would reduce spend or leave a partner if audience fulfillment is too slow, while 85% would pay a premium for same-day fulfillment. Nearly all respondents said more audience segments would make them more likely to increase spend, and 32% had reduced, paused or reconsidered investment because proving ROI to leadership was difficult.
The Budget Signal
For CMOs and retail growth leaders, the implication is direct. A retail media partner can have attractive first-party data and still lose budget if it cannot activate audiences while the campaign decision is still live. A promotion, product launch or seasonal window does not wait for a custom segment to arrive next week.
This changes the evaluation model. Reach and shopper data remain important, but they are table stakes. The operating questions become: how many usable segments are available without a manual request, how quickly can custom audiences be fulfilled, how soon can results inform the next campaign, and how credible is the incrementality method?
A Practical Decision Model
Score each commerce media partner across four layers. First, audience choice: does the network offer segments that match actual category, mission, lifecycle and basket behavior, or only broad demographic buckets? Second, activation speed: can a team launch within the decision window, not just within the platform’s internal service target?
Third, measurement confidence: does the partner separate sales that would have happened anyway from likely incremental effect, and can your finance team understand the method? Fourth, learning velocity: do campaign results arrive in time to change the next brief, audience or offer? A report that lands after the season is useful for history, not optimization.
What Networks Should Fix
Commerce media sellers should treat audience operations as a product experience. Self-service audience building, transparent segment definitions, faster fulfillment, and post-campaign data that arrives before the next planning cycle are not nice additions. They are now budget-defense features.
The GrowthLoop release points to Gopuff as an example of expanding audience catalogs after implementing a warehouse-native stack. Whether a retailer uses that exact architecture is less important than the operating lesson: advertisers pay for the ability to act on shopper data quickly, safely and repeatedly.
The Takeaway
Retail media has moved from inventory sales to operating performance. The next budget conversation should not ask only which network has the biggest audience. It should ask which partner can give the marketing team useful audience choice, fast activation and credible proof before the next decision has already passed.
