Epsilon
Epsilon enables enterprise brands to deliver personalized marketing at scale by combining one of the industry's largest consumer identity graphs with an integrated suite of data, technology, and services.
Last updated Jul 30, 2026 by ATDb automated enrichment · Connections updated Aug 5, 2026
At a glance
- Employees
- 5001-10000
- Funding
- Acquired by Publicis Groupe for ~$4.4B in 2019
- Revenue
- $1B+
- Stock
- NASDAQ:EPSN
About
One of the largest marketing technology and data companies globally, operating as a key data and identity asset within Publicis Groupe
Epsilon is a global marketing technology company that sits at the intersection of data, technology, and services, enabling enterprise brands to deliver highly personalized customer experiences at scale. The company offers a comprehensive suite of solutions spanning loyalty marketing, CRM, digital media, email marketing, and data management, all underpinned by one of the largest proprietary consumer identity graphs in the industry. Epsilon's CORE ID and PEOPLECLOUD platform allow marketers to connect with consumers across channels with precision and relevance. Epsilon operates as a subsidiary of Publicis Groupe, the French multinational advertising and public relations company, which acquired Epsilon in 2019 for approximately $4.4 billion. This acquisition significantly bolstered Publicis's data and technology capabilities, positioning Epsilon as a central pillar of the group's data-driven marketing strategy. Despite being part of a larger holding company, Epsilon continues to operate as a distinct brand and business unit serving clients independently. In the AdTech and MarTech ecosystem, Epsilon is recognized as a major player in identity resolution, first-party data activation, and omnichannel personalization. The company competes with firms like Acxiom, Oracle Marketing Cloud, Salesforce Marketing Cloud, and Adobe Experience Cloud, differentiating itself through its proprietary identity infrastructure, deep loyalty program expertise, and integrated managed services model that combines technology with strategic execution support.
Business model
SaaS + Managed Services
Target market
Enterprise
What they offer
CORE ID
Epsilon's proprietary identity resolution technology that connects consumer data across devices, channels, and environments using a persistent, privacy-safe identifier.
PeopleCloud
An integrated marketing platform that unifies customer data, analytics, and activation capabilities to enable personalized omnichannel engagement.
PeopleCloud Loyalty
A loyalty marketing solution that helps brands design, manage, and optimize loyalty programs to drive customer retention and lifetime value.
PeopleCloud Messaging
An enterprise-grade email and messaging platform enabling personalized, triggered, and transactional communications at scale.
PeopleCloud Prospect
A prospecting and audience targeting solution leveraging Epsilon's data assets to identify and reach high-value new customers.
Digital Media Solutions
Programmatic and data-driven digital advertising services including display, video, and connected TV, powered by Epsilon's identity graph.
Epsilon Data
Access to Epsilon's extensive first- and third-party consumer data assets for audience segmentation, enrichment, and targeting.
Agency Services
Managed services and strategic consulting to help brands plan, execute, and optimize data-driven marketing programs.
Key features
Use cases
Customer segments
Tech & specs
Technology stack
Security & compliance
Deployment
API
Yes
- 1969 · Founded