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    Maximize site monetization

    Publisher monetization shouldn’t be a one-size-fits-all approach. Epsilon can help you tap the power of your audience and enhance monetization with tools and flexible integrations that adapt to your business needs. With our direct demand, premium technology platform, and future-proofed publisher identity solutions, you can unlock the most value from your properties.

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    CORE Private Exchange: the complete publisher platform that powers monetization and control

    Advanced UI

    Manage, analyze and optimize your inventory with our transparent, robust publisher interface.

    Identity solutions

    With two identity solutions, we enable incremental impressions and revenue by immediately and accurately identifying your traffic (including cookieless visitors).

    Publisher API

    Get the information you need, where you need it. Connect to our API and access your metrics in your own systems.

    Why join CORE Private Exchange?

    Access to direct demand

    Connect your audience to premium advertisers, with direct demand backed by Epsilon and Publicis Groupe. We support 19 formats across web, in-app, OLV and CTV.

    Streamline inventory management with heightened control

    Our intuitive publisher UI gives you the detailed real-time reporting, yield-management tools and brand safety controls you need to optimize performance.

    Boost and future-proof your monetization potential with proven identity solutions

    With Epsilon’s identity solutions, PubLink and Shared ID with Reverse Proxy*, you can immediately and accurately identify previously unaddressable traffic, leading to incremental impressions and revenue. Built on first-party identifiers and authenticated data, our solutions are insulated from third-party cookie deprecation and potential regulation.

    *SharedID is an open-source identifier maintained by Prebid. Reverse Proxy is an Epsilon-specific integration extension that improves upon an existing Shared ID implementation.

    Learn more about our identity solutions

    Receive support without the hassle

    We’ll help you make the most of our solutions. Every publisher has a dedicated, live support representative to help you build effective strategies and troubleshoot questions.

    What makes us different

    No fees

    Epsilon charges zero fees, so you capture more revenue per ad sold.

    Direct demand

    We connect your inventory to demand from Epsilon and Publicis Groupe media clients, which represent the top brands in the world.

    Immediate lift

    Our publisher identity solutions connect to Epsilon’s robust ID graph of 200M+ U.S. consumers, allowing us to identify traffic and increase impressions right from the start.

    High-touch support

    Every publisher receives a dedicated support representative, so you don’t have to rely on static FAQ pages.

    Flexible integrations for your preferred approach:

    Header bidding
    Connect to our numerous server-side and client-side integration options, supporting web and app inventory.
    Tell me more
    SSAPI
    With Full and Lite integrations, we can meet the needs of app and CTV partners.
    Tell me more
    Direct tags
    Implement JavaScript tags to enable ad serving across web, mobile web, video and connected devices.
    Tell me more
    Insights

    More resources to keep you informed

    Blog
    Loss of third-party cookies could cost publishers and broadcasters - unless they act
    Learn more
    Blog
    Open web advertising is getting more costly: Who is winning and losing?
    Learn more

    Accurately identify your site audience with our publisher identity integrations

    Get immediate, measurable revenue lift from our publisher identity integrations. Backed by Epsilon’s CORE ID—the industry’s most accurate, stable, and scalable identity of 200M+ U.S. consumers—our solutions help you identify more of your visitors right from the start. That way, you can increase your bid opportunities and earnings, while also providing your users with more personalized browsing experiences.

    Shared ID with Reverse Proxy

    An open-source solution, Shared ID uses domain-specific first-party identifiers to consistently recognize unauthenticated site visitors, including browsers that don’t support third-party cookies such as Safari and Firefox. Originally created by Epsilon in 2018, the solution was transferred to Prebid in 2020 to expand industry access. Shared ID now stands as Prebid’s most widely adopted solution. Reverse Proxy, an Epsilon-exclusive integration enhancement, extends the resiliency of Shared ID so you can identify your site audience longer and with more confidence.

    PubLink

    An Epsilon-created integration, PubLink activates your authenticated data by deterministically identifying your logged-in traffic even when there is no cookie. This improved audience identification allows you to unlock more inventory, earn more ad income and deliver a more personalized ad experience to your visitors.

    How we’re unique

    Immediate results

    Because our solutions connect to an established, scaled identity graph (CORE ID), you’ll see immediate increases in identification rates, impressions, and revenue.

    Free to use

    Our publisher identity solutions are available to all publishers at no cost.

    Future-proofed approach

    Our identity integrations rely on first-party identifiers and authenticated customer data, giving your monetization insulation from third-party cookie deprecation and potential privacy concerns.

    Privacy first

    We uphold the highest standards of privacy to ensure compliance with privacy laws across the globe, including GDPR, CPRA and others.

    The benefits of implementing an identity solution

    Third-party cookies are going away, making it harder than ever to reach the right person. Our identity solutions are built to withstand these changes, so you’ll see real results.

    6

    average increase in cookieless bid requests identified with our identity solutions

    518

    average increase in bid rate on traffic with PubLink

    285

    average increase in impressions on traffic with an identity solution

    Select your business model to see which Epsilon publisher identity solution is best for you

    Primarily unauthenticated traffic

    Primarily authenticated traffic

    Both unauthenticated and authenticated traffic

    Already have an alternative ID system in place?

    Primarily unauthenticated traffic

    We recommend Shared ID with Reverse Proxy, which uses domain-specific, first-party cookies to connect to Epsilon’s CORE ID. On average, Epsilon recognizes 5.9X more cookieless bid requests for publishers that implement SharedID with Reverse Proxy.

    Primarily authenticated traffic

    We recommend PubLink, which uses your consumers’ opted-in email log-in data to connect to Epsilon’s CORE ID. On average, Epsilon recognizes 6.2X more cookieless bid requests for publishers that implement PubLink. This leads to an average 290% increase in purchased impressions.

    Both unauthenticated and authenticated traffic

    We recommend you implement both Shared ID with Reverse Proxy and PubLink to enable the most robust identification and lift.

    Already have an alternative ID system in place?

    Our identity solutions are designed to provide additional monetization independent of and in tandem with alt IDs. Contact us to learn more about how we can add value along with your existing solution.

    Insights

    More resources to keep you informed

    Blog
    A delay in cookie deprecation doesn't mean you should put off adopting an identity solution
    Learn more
    Blog
    Monetizing web traffic on cookieless browsers with PoolHost
    Learn more
    Blog
    How publisher identity combines optimal consumer experience with privacy
    Learn more