Epsilon Logo
  • Platform

    • PeopleCloud

    Capabilities

    • Identity resolution
    • Artificial intelligence
    • Intelligent creative
    • Connected marketing

    Products

    • Digital media
    • Data clean room
    • Customer data platform
    • Loyalty platform
    • Consumer marketing data
    • Strategic services
    • Retail media
    • Website personalization
    • All products >
  • By use case

    • Unify & cleanse your first-party data
    • Identify high value customers
    • Connect messages across paid & owned
    • Increase customer loyalty & retention
    • Personalize media across channels
    • Acquire new customers
    • All use cases >

    By channel

    • Display
    • Connected TV
    • Email
    • Audio
    • Online video

    By function

    • Partners
    • Publishers
    • All resources
    • Research & insights
    • Case studies
    • Blog
    • News
    • About us
    • Culture
    • Pressroom
  • Careers
  • AdChoices
  • Platform

    • PeopleCloud
  • Products

    • Digital media
    • Data clean room
    • Customer data platform
    • Loyalty platform
    • Consumer marketing data
    • Strategic services
    • Retail media
    • Website personalization
    • Automotive marketing
    • All products
  • Capabilities

    • Identity resolution
    • Artificial intelligence
    • Intelligent creative
    • Connected marketing
  • Industries

    • Consumer packaged goods
    • Financial services
    • Health
    • Restaurants
    • Retail
    • Travel
    • Tourism
    • Nonprofits
    • Telecom, media & entertainment
    • All industries
  • Channels

    • Display
    • Connected TV
    • Email
    • Audio
    • Online video
  • Resources

    • All resources
    • Research & insights
    • Case studies
    • Blog
    • News
  • Use cases

    • Unify & cleanse your first-party data
    • Connect messages across paid & owned
    • Identify high value customers
    • Acquire new customers
    • Increase customer loyalty & retention
    • Personalize media across channels
    • All use cases
  • About

    • About us
    • Culture
    • Pressroom
    • Locations
    • Careers
    • Awards & recognition
  • Functions

    • Partners
    • Publishers
  • Learn

    • Customer loyalty strategy
    • Connected TV
    • Programmatic advertising
    • Data clean room
Consumer Info 
Privacy Policy 
Terms & Conditions 
AdChoices 
Your Privacy Choices 
Privacy Settings 
©2026 Epsilon Data Management, LLC. All rights reserved. All names and logos are trademarks or registered trademarks of their respective owners.
  1. Homepage
  2. Resources
  3. Blog
  4. How publisher identity combines consumer experience with privacy
Blog

How publisher identity combines consumer experience with privacy

By: Heather Swarens•December 8, 2020

In this time of third-party cookie deprecation, future-proof publisher identity solutions are crucial.

Knowing this, we made the exciting decision to transfer ownership of our PubCommon ID’s technology to Prebid.org—an open-source community that helps publishers implement header bidding and other products on their websites and apps—to establish the industry’s first universal ID, SharedID: a common ID that publishers, exchanges and buyers can all use to increase identity consistency.

In a landscape with many identity solutions, we are honored that Prebid.org selected PubCommon ID to bring the industry’s first community-driven approach to identity, and are proud to be a part of a solution mutually beneficial to publishers, buyers and users alike in a privacy centric way.

As the industry debates what the world will look like post third-party cookies, universal IDs like SharedID address both the first-party identifier and third-party cookie hurdles that face digital advertising. This article outlines the key benefits of using a publisher identity solution in today’s changing landscape.

Consumers retain the personalization they want…

Modern consumers value personalized brand experiences. Our research shows that 80% of consumers are more willing to do business with a company that provides personalized experiences, and 90% find personalization appealing.

If advertisers who have historically heavily relied on third-party cookies don’t adjust their identity strategies now, consumers will be met with repetitive, irrelevant advertisements. And these aren’t just minor annoyances: Our study indicates that 68% of consumers think it’s worth sharing personal information in exchange for relevant offers, recommendations and discounts.

When we built PubCommon ID in 2018, our aim was to give publishers more control over their data, creating better experiences for publishers and consumers alike. We wanted to offer publishers an open-source, identity solution that improves matching and increases revenue, while not impacting latency. Apple ITP was being released at the time of

PubCommon ID’s creation, which started the browser restrictions trends that impact publishers’ monetization with partners like Epsilon. It is designed to be compliant with Apple ITP guidelines, and as a result to be compliant with other browser restrictions in the future. PubCommon ID has already achieved widespread adoption and driven positive results since its inception. Those who have implemented have seen a 23% increase in revenue and a 30% increase in filled impressions, and sometimes higher.

And, when more publishers can individually ID consumers, more consumers can experience the personalized content they prefer. For SharedID, Prebid sought to create a consistent, widespread solution within the marketplace to help with scalability. Open-source identity solutions, like PubCommon ID and now SharedID, help expand the scope of publishers who can implement ID solutions and free publishers from relying on hundreds of cookies, greatly reducing the overall identifier footprint.

…while retaining the privacy and transparency they want.

In addition to preferring personalized experiences, consumers want privacy. Consumers are increasingly aware of how their data is collected, and want full transparency into how it’s used. There’s even a new group of consumers emerging: one willing to act on their vocalized concern related to the management (or mismanagement) of their data. According to Cisco, 32% of consumers have gone so far as to switch companies or providers over data or data-sharing policies.

What we see with publisher identity solutions like SharedID and PubCommon ID is a distinct respect for privacy. SharedID has a single-point opt-out to give consumers full control over their privacy and advertising preferences. SharedID shares the vision of Epsilon and our PubCommon ID to monetize, fill ad space and improve user experience in a privacy-centric way. We decided to help power SharedID, as it has the ability to scale PubCommon ID’s vision based on Prebid’s marketeshare and trusted presence.

SharedID includes both first- and third-party components. This supports both today’s marketplace, which relies on third-party cookies, and the future marketplace, which will rely on first-party cookies. Having both first- and third-party cookie support within one solution provides a more complete identity solution and makes the transition into the third-party-cookieless world easier for all parties. SharedID also puts control back in the hands of publishers, allowing publishers to drive a truly transparent solution for identity. The solution embraces the open-source and community-driven approach that allows the open internet and ad tech at large to embrace a common, transparent namespace.

A new way to connect with consumers

We’re excited to be on the ground floor of industry change. SharedID builds on the vision of PubCommon ID to introduce an industry-wide improvement of publishers’ ability to identify their audience and monetize their websites, while keeping user privacy and experience at the forefront. Since SharedID is a community-owned solution, there is input from multiple companies in the ecosystem and therefore will offer more broad-based benefits and wider adoption than a solution built by one company looking to benefit themselves first.

This transfer gives us an opportunity to provide input into future changes with PubCommon ID and other Prebid product solutions, and is a validation of Epsilon as a leader in identity solutions. We look forward to being a part of the new digital advertising landscape.

To learn more, read the announcement here.

About the author
Heather Swarens
Heather Swarens

Heather Swarens is a Senior Vice President of Media Development at Epsilon.

All articles by Heather Swarens →

In this article

  1. Consumers retain the personalization they want…
  2. …while retaining the privacy and transparency they want.
  3. A new way to connect with consumers
Topics:PrivacyDigital MediaIdentity

Get insights straight to your inbox.

Sign up for the Epsilon Insider newsletter and receive the latest marketing trends and insights from the industry's top experts.

Privacy Policy. You may withdraw your consent at any time. For more details see our Privacy Policy or update your Preferences.

Insights

Related Posts

A woman looks at her phone against a backdrop of colorful neon lights.
Blog
Data clean room vs. data warehouse: What's the difference and why you need both
Learn more
Smiling woman in glasses and purple jacket next to the text "The identity gap is real." and an E-shaped logo.
Video
The Real Deal on identity's impact
Learn more
Two smiling women relaxing on a couch, one looking at a phone, the other holding a TV remote.
Blog
CTV vs. linear TV: The decision framework for today's media planner
Learn more
Explore more insights