Xandr, Inc. (pronounced "Zander") was the advertising and analytics subsidiary of Microsoft, which operates an online platform, Community, for buying and selling consumer-centric digital advertising.[1]
In December 2021, AT&T sold Xandr (including AppNexus and Clypd) to Microsoft for an undisclosed price.[2] The acquisition was completed in June 2022.
In 2023, Microsoft retired the Xandr name and consolidated the business under its Microsoft Advertising brand.[3]
In 2025, Microsoft announced that it would shut down its buy-side Invest product in early 2026.[4]