Unified ID 2.0
Ventura, California, United States · Founded 2021
51-200 employees · NASDAQ:TTD
Sourced & current · updated Oct 7, 2026Website
Unified ID 2.0 (UID2) is an open-source identity framework designed to enable publishers, advertisers, and digital advertising platforms to establish and maintain user identity across the open internet, leveraging encrypted email and phone number data to deliver a privacy-conscious and accurate identity standard.
Where they sit
Stack tier: Ecosystem Services (A)
Identity ResolutionPrivacy-First Advertising
Leading open-source cookie alternative for the open internet, with broad adoption across DSPs, SSPs, publishers, and data platforms globally
Ownership
Parent: The Trade Desk (originator and current public operator)