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User ID Module is a New Hero in the Cookieless Era

Adtelligent

They came up with a solution like a user identifier for advertising that relies on first-party data. And, first-party cookies remain the fundamental assets. For this, Prebid.org, an innovative ad tech organization, created a User ID module as a key element of the Prebid open-source header bidding software suite.

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Digiday+ Research: A guide to the top 10 ID alternatives for publishers

Digiday

Epsilon’s PubCommon ID, which is an open source first-party cookie ID in the publisher’s domain, was adopted by Prebid in 2020 and merged with SharedID. Publishers and advertisers can connect their first-party data to CORE ID’s established users’ digital identities. more efficient delivery than cookies.