Xandr

Leading enterprise-grade programmatic advertising platform with strong presence in premium and CTV inventory

Xandr is an advanced advertising technology platform that provides end-to-end solutions for programmatic advertising across multiple channels and formats. Originally formed from AT&T's acquisition of AppNexus in 2018 and subsequent consolidation of its advertising assets, Xandr operates as a subsidiary of Microsoft following its acquisition in 2021. The platform offers a comprehensive suite of products including demand-side platforms (DSP), supply-side platforms (SSP), ad serving technology, and data management capabilities designed to help advertisers, publishers, and media companies execute sophisticated programmatic campaigns at scale. Xandr serves premium publishers, broadcasters, agencies, and brands with solutions that emphasize transparency, data-driven targeting, and cross-screen advertising capabilities. Under Microsoft's ownership, Xandr continues to operate as a distinct advertising technology platform while benefiting from integration with Microsoft's broader advertising ecosystem and cloud infrastructure. The platform is particularly known for its advanced programmatic capabilities, premium inventory access, and tools that enable advertisers to reach audiences across connected TV, display, video, and mobile environments with sophisticated targeting and measurement capabilities.