CORE ID provides deterministic identity resolution that connects customer data across channels and devices, enabling personalized marketing while addressing privacy requirements in a post-cookie advertising landscape.
Last updated Mar 8, 2026 by AI Enrichment
Leading identity resolution platform within a major marketing technology ecosystem
Epsilon CORE ID is a comprehensive identity resolution solution that serves as the foundation of Epsilon's people-based marketing platform. The product enables brands and marketers to create unified customer profiles by connecting online and offline data across multiple touchpoints, devices, and channels. CORE ID leverages Epsilon's extensive first-party data assets and deterministic matching capabilities to help marketers identify consumers, understand their behaviors, and deliver personalized experiences at scale. As part of Epsilon, a subsidiary of Publicis Groupe, CORE ID operates within one of the world's largest marketing technology and advertising ecosystems. The platform addresses critical challenges in the evolving digital advertising landscape, particularly as the industry moves away from third-party cookies toward privacy-centric identity solutions. CORE ID integrates with Epsilon's broader suite of data, technology, and media solutions to provide end-to-end marketing capabilities. The platform is designed for enterprise-level marketers and brands seeking to improve customer recognition, enhance targeting precision, and measure marketing effectiveness across fragmented digital environments. CORE ID's identity graph connects billions of consumer touchpoints, making it a significant player in the identity resolution space alongside competitors in the data onboarding and customer data platform markets.
Deterministic identity resolution connecting billions of consumer identifiers across devices and channels
Tools for creating and maintaining unified customer profiles across online and offline touchpoints
Capabilities to connect offline customer data with digital identifiers for cross-channel activation
Integration with media platforms and DSPs for targeted advertising based on resolved identities