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    Copyright © Epsilon Data Interactive, Inc. (trading as Epsilon International). All rights reserved. Trading address: 2 Television Centre, 101 Wood Lane, London W12 7FR

    CitrusAd is now part of Epsilon Retail Media

    Epsilon Retail Media pairs CitrusAd’s onsite engine with cross-channel audience recognition and activation, so brands can move the same shopper from first impression to purchase.

    A collage of a smiling woman's portrait, a hand picking an apple with "Deals you'll love" text, and a woman shopping for avocados in a grocery store.

    One unified platform

    Onsite and offsite, better together

    Offsite advertising

    • Display & Mobile

    • Online Video & CTV

    • Audio

    Onsite (formerly CitrusAd)

    • Sponsored Product Ads

    • Onsite Display

    • Brand Pages

    Offsite advertising

    • Display & Mobile

    • Online Video & CTV

    • Audio

    Onsite (formerly CitrusAd)

    • Sponsored Product Ads

    • Onsite Display

    • Brand Pages

    Epsilon Retail Media benefits from a self-serve retail media platform originally built to power onsite monetisation inside retailer websites and apps.

    That capability enables:

    • Sponsored product and search placements close to the point of purchase
    • Retailer-controlled inventory and monetisation models
    • Transparent reporting at product and SKU level where supported

    Combined with Epsilon’s identity and activation capabilities, onsite performance can now extend beyond the retailer environment while maintaining audience continuity and measurement integrity.

    Find out more about Epsilon Retail Media

    Laptop, smartphone, and tablet displaying different retailco ads.

    Trusted by leading retailers

    Epsilon works with leading retailers across grocery, electrical, home improvement and marketplace environments.

    Tesco logo
    John Lewis Partners logo
    Deliveroo logo
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    Ocado logo with a grey swirling design above the company name.
    Waitrose & Partners logo
    Unilever logo
    Wickes logo.

    A retail media supergroup

    In July 2021, CitrusAd was acquired by Publicis Groupe and integrated within Epsilon.

    Since then, CitrusAd’s onsite retail media technology has been combined with Epsilon’s identity-led multichannel activation and transaction-based measurement to create a comprehensive retail media proposition.

    Retailers gain scalable monetisation. Brands gain a coordinated plan across onsite and offsite, measured against real outcomes.

    Read the announcement
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    Frequently asked questions

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    What is the difference between onsite and offsite retail media?

    Onsite retail media appears within a retailer’s ecommerce environment. Offsite retail media extends retailer audiences into external publisher environments while maintaining audience continuity.

    What does self-serve mean?

    Epsilon Retail Media operates as a modular solution, supporting both managed service and self-serve workstreams.

    Brands and agencies can plan, activate and optimise campaigns directly within the platform interface, while retailers can choose the level of operational support that suits their internal structure. This flexibility allows organisations to scale capability at their own pace without compromising measurement consistency.

    Can in-store impact be measured?

    Yes. Built directly into the Epsilon Retail Media platform, in-store attribution automatically reconciles onsite activity with in-store point-of-sale transactions.

    The result is a complete, end-to-end view of performance across the shopper journey, without sacrificing the digital performance metrics brands rely on.

    Can agencies use the platform directly?

    Yes. The modular structure supports both brand-direct and agency-led activation models, alongside managed service support where required. This ensures flexibility across different operating structures.

    How quickly can a retailer launch?

    Launch timelines vary depending on ecommerce infrastructure and data integration readiness. Epsilon Retail Media is designed to integrate with existing retailer systems while supporting phased rollout where appropriate.

    What data is required to activate campaigns?

    Activation typically relies on retailer first-party data within the retail environment. Offsite extension leverages identity capabilities to maintain audience continuity. Where required, secure collaboration options support brand and retailer alignment without disrupting governance or workflow.

    Further reading

    A man packs items into brown paper bags on a table with a laptop, connected by a wavy blue line to an outline icon of a market booth with two people.
    Blog
    What is a retail media network?
    Learn more
    Headshot of Simon Trewavas, SVP Commerce Media, Epsilon
    Blog Post
    3 ways to identify retail media networks worth investing in
    Learn more
    Esme Robinson, Director, Platform Solutions, against a retail store background with business analytics and growth icons.
    Blog
    How to make your marketing smarter by addressing your digital bias
    Learn more