Retail Media Measurement: No Single “Golden Metric”
Albertsons Media Collective chief Liz Roche rejects the idea that one metric can capture retail media’s true value. Retail media is no longer only a bottom-funnel shopper tactic. It operates across awareness, consideration and conversion. Measuring activity with a single number risks missing brand reach, repeat purchase behavior and long-term growth.
Beyond ROAS: Why Traditional Metrics Fall Short
Return on ad spend is useful for short-term efficiency but incomplete as a business measure. ROAS often favors tactics that prompt immediate purchases and may underreport benefits such as:
- Lifetime value from repeat buyers
- New-to-brand and new-to-category customer acquisition
- Category expansion and cross-sell lift
- Longitudinal effects beyond the attribution window
Incremental ROAS or iROAS compounds the problem when methodologies differ. Variations in holdout design, attribution windows, modeling choices and shopper-level versus aggregated measurement produce iROAS that cannot be reliably compared across retailers or campaigns. That inconsistency creates false confidence and poor optimization decisions.
A Call for Standardization and Collaboration
Measurement must move from vendor- or retailer-specific math toward common definitions. Brands, retailers and bodies such as the IAB should align on:
- Standard metric definitions and reporting conventions
- Transparent methodologies for lift tests and modeling
- Shared data contracts that allow reproducible measurement
Brands are already building internal measurement frameworks. Retailers must support that work with clear, auditable data so results are comparable and actionable.
The Future: In-Store Media and Co-Creation
In-store media is a major growth opportunity. When paired with measurement that links impressions to basket lift, footfall and repeat purchase, physical media becomes a full-funnel channel. Roche calls for co-creation: retailers and brands should design experiences and measurement together, testing pilots that connect in-store exposure to downstream value.
The takeaway is simple: treat measurement as a portfolio. Move beyond a single golden metric, demand methodological transparency, and build shared standards so retail media can scale as a strategic growth channel.
