AT&T Inc.

AT&T Inc. is a major player in the AdTech ecosystem, leveraging its extensive telecommunications infrastructure and media assets to offer a range of advertising-related products and services. As the former parent company of the Xandr advertising platform, AT&T has deep expertise in data-driven, targeted advertising solutions. Xandr, which was recently acquired by Microsoft, provided AT&T with a sophisticated programmatic advertising exchange and advanced audience targeting capabilities. Additionally, AT&T's ownership of WarnerMedia gave the company a significant content and media portfolio to monetize through advertising. While no longer owning WarnerMedia, AT&T continues to offer advertising solutions through its core telecommunications business, providing brands with data-driven targeting and analytics tools to optimize their digital advertising campaigns. The company's market position and significance in the AdTech space stems from its ability to leverage its vast customer data, media assets, and technology capabilities to deliver highly effective and measurable advertising solutions to its clients.