Epsilon
Epsilon is a marketing technology firm acquired by Publicis Groupe in 2019, now operating as a central pillar of that global network with more than 8,000 employees across over 40 offices worldwide.
Last updated Oct 5, 2026 by the ATDb Editorial Team
AI-drafted from public sources27 sources cited
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 marketing technology firm acquired by Publicis Groupe in 2019, now operating as a central pillar of that global network with more than 8,000 employees across over 40 offices worldwide. The company helps clients activate first-party data across channels and devices while maintaining consumer privacy, connecting advertisers with consumers in ways designed to drive measurable performance. A people-based identity graph enables brands, agencies, and publishers to reach verified individuals rather than cookies or devices across the open web. For publishers specifically, the platform offers advanced audience targeting, behavioral segmentation, personalization through Conversant, omnichannel support spanning display, mobile, video, and email, real-time campaign tracking, and access to an advertiser network with a matching mechanism designed to improve ad fill rates. Source 1: epsilon.com — About us | The leader in outcome-based marketing Source 2: adweek.com — Epsilon Source 3: playwire.com — Ad Tech Ecosystem: Epsilon
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