Epsilon CORE ID

Epsilon CORE ID is positioned as one of the largest and most established identity resolution providers in the advertising technology ecosystem, competing at the enterprise level with extensive first-party data assets and deep integration across the marketing technology landscape.

Epsilon CORE ID is a leading provider of identity resolution and customer data solutions specifically designed for the advertising technology ecosystem. As part of Epsilon, a global advertising and marketing technology company owned by Publicis Groupe, CORE ID delivers enterprise-grade identity management capabilities that enable brands, marketers, and publishers to recognize, understand, and engage with consumers across digital channels while maintaining privacy compliance. The platform specializes in deterministic and probabilistic identity matching, leveraging one of the largest proprietary identity graphs in the industry. Epsilon CORE ID helps organizations unify fragmented customer data from multiple touchpoints, resolve identities across devices and channels, and activate audiences for personalized marketing campaigns. The solution addresses critical challenges in the cookieless future by providing durable identity solutions that respect consumer privacy while enabling effective marketing measurement and personalization. Epsilon CORE ID serves major brands, agencies, publishers, and ad tech platforms seeking to improve customer recognition, enhance data quality, and drive better marketing outcomes. The platform integrates with major marketing clouds, data management platforms, and advertising platforms, positioning itself as essential infrastructure for modern customer data strategies in an increasingly privacy-focused digital advertising landscape.