Epsilon Retail Media
Impressions get reported and clicks get counted. But who can tell you which campaigns drove incremental sales online and in-store?
Epsilon Retail Media ties your media spend directly to purchase outcomes across every channel and every format.
In a 30 minute consultation, we’ll discuss how an identity-led approach can connect onsite and offsite activity, proving in-store impact.
Many retail media platforms still match open‑web ads to device IDs or behavioural clusters on a probabilistic basis, rather than to a verified person. When a user jumps from web to app or screen to screen, your frequency caps, audience exclusions and retargeting logic all break. Epsilon Retail Media is built on COREid: a deterministic identity that represents a real, verified person across every channel.
When your sponsored products, offsite display and CTV all run through different providers, each operates in its own silo, which leads to weaker match rates, more data leakage and a patchier view of performance.
Epsilon Retail Media runs it all from one platform, planned, bought and measured through one interface. Your shopper sees a sequenced journey. You see what's working.
Retail media should be the most measurable channel in your mix; retailers own the point of sale. But most platforms can't tell you whether someone bought your product. Epsilon uses person-level identity that persists across channels and into the store, tying media exposure directly to purchase. Not modelled or inferred, but observed, incremental lift at the brand, SKU and store level with numbers that hold up when it’s time to report.
Ulta Beauty needed to connect retail media campaigns to real shopper outcomes across online and in-store. Using Epsilon’s person-level identity and closed-loop measurement, they moved beyond click-based reporting, could see exactly which media drove incremental purchases, and personalise the experience at every touchpoint.
The result: more relevant campaigns, clearer proof of impact and a retail media strategy built on customer truth rather than platform-reported estimates. Continue Reading...
Currys recognised an opportunity to test a full-funnel approach to engaging tech enthusiasts before and during product launches.
When display, OLV, and CTV were combined through Epsilon, conversions rose 46% compared with display alone. And with nearly 7 store visits per 1,000 impressions, the campaign proved the power of coherent, multi-channel engagement. Continue Reading...
Article
Most retail media measurement over-indexes on digital transactions and ignores the 71% of sales that still happen in physical stores. This article breaks down why digital bias distorts your ROAS, how it leads to bad budget decisions and what identity-led measurement looks like when it actually accounts for the full purchase journey.
Read the articleGuide
The number of retail media networks is growing fast, but the quality of their data, measurement and identity capabilities varies wildly. This guide gives you three practical criteria for evaluating which RMNs will actually deliver closed-loop measurement, genuine reach and incremental outcomes, and which ones are just repackaging impressions.
Read the guideReport
IDC’s independent analysis of why deterministic identity is becoming the foundation of retail media performance. Covers the measurement gap, the limitations of probabilistic approaches and why brands that invest in identity-led retail media outperform those relying on platform-reported metrics.
Read the IDC ReportWe already buy retail media through our retailers directly. Why would we use Epsilon?
Buying directly through each retailer means you’re managing separate platforms, separate audiences and separate measurement for every partnership. You can’t de-duplicate reach, can’t control frequency and can’t compare performance on a level playing field. Epsilon gives you one platform to plan, activate and measure across multiple retailers with a single identity layer that ties everything back to the same person. You still work with your retail partners. You just stop managing them in silos.
How does closed-loop measurement work if some of our sales happen in physical stores?
That’s exactly where it matters most. Because COREid is a persistent, person-level identity — not a cookie or device ID — it follows real people from digital ad exposure into physical stores. Epsilon connects media exposure to loyalty and transaction data, so you can measure the impact of a CTV ad on an in-store purchase. Most retail media platforms lose the signal at the store door. Epsilon doesn’t.
Which retailers does Epsilon work with in the UK?
Epsilon partners with leading UK retailers including Tesco, Ocado, Waitrose, John Lewis and Deliveroo, among others. The platform is built to work across multiple retailer partnerships from a single interface so you get unified planning, activation and measurement regardless of which retailers you work with. If you’re expanding into new retail partners, the same identity and measurement framework scales with you.
Book a consultation with our Retail Media team. We’ll look at your current setup across retailers, show you where identity-led closed-loop measurement would change your reporting, and give you a clear picture of the gaps.
No commitment. No pitch. Just 30 minutes.