Xandr

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.

In December 2021, AT&T sold Xandr (including AppNexus and Clypd) to Microsoft for an undisclosed price. The acquisition was completed in June 2022.

In 2023, Microsoft retired the Xandr name and consolidated the business under its Microsoft Advertising brand.

In 2025, Microsoft announced that it would shut down its buy-side Invest product in early 2026.