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6 Alternatives to Third-Party Cookies and Mobile IDs in AdTech

Clearcode

It’s important to note that there are two main types of cookies: First-party cookies and third-party cookies. First-party cookies are created by the website that the user is visiting. Third-party cookies are created by websites other than the one the user is visiting.

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

Digiday

On the publisher side, this is achieved through an integration specific for the publishers; on the client site side, it uses a tagging integration. 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.