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Brief
Epsilon CORE ID

Epsilon CORE ID

Identity Resolution & Data ManagementProduct· part of Epsilonepsilon.com

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 Jun 23, 2026 by the ATDb Editorial Team

HQ
Irving, Texas, United States
Network
Parent
Publicis Groupe
Connections
20

At a glance

Employees
10000+
Funding
subsidiary
Revenue
$10M-$50M
Stock
NASDAQ:EPSN
11integrations8competitors1corporate family

About

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 (which has been a wholly-owned subsidiary of Publicis Groupe since July 1, 2019, $4.4B acquisition), 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.

Business model

SaaS

Target market

Enterprise

What they offer

  • CORE ID Identity Graph

    Deterministic identity resolution connecting billions of consumer identifiers across devices and channels

  • Identity Management

    Tools for creating and maintaining unified customer profiles across online and offline touchpoints

  • Data Onboarding

    Capabilities to connect offline customer data with digital identifiers for cross-channel activation

  • Audience Activation

    Integration with media platforms and DSPs for targeted advertising based on resolved identities

Key features

Deterministic identity matchingCross-device identificationOmnichannel customer recognitionPrivacy-compliant identity resolutionIntegration with Epsilon's first-party data assetsReal-time identity resolutionHousehold-level identificationPersistent ID assignment

Use cases

Cross-device customer recognition and targetingOffline-to-online data connection for omnichannel marketingPersonalized advertising across digital channelsCustomer journey mapping and attributionAudience segmentation and activationMeasurement and analytics across touchpointsLoyalty program integration with digital advertisingRetail media network identity resolution

Customer segments

Enterprise brands and retailersConsumer packaged goods companiesFinancial services firmsAutomotive manufacturersTelecommunications companiesTravel and hospitality brandsMedia and entertainment companiesHealthcare and pharmaceutical marketers

Tech & specs

Technology stack

Identity graph technologyMachine learning for identity matchingCloud infrastructureReal-time data processingAPI integration frameworkData management platform (DMP) technologyCustomer data platform (CDP) capabilities

Security & compliance

GDPRCCPASOC 2ISO 27001Privacy Shield FrameworkNAI Code of ConductDAA Self-Regulatory Principles

Deployment

Cloud

API

Yes

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