Thaddeus Arroyo

Thaddeus Arroyo

AT&T Business
Chief Executive Officer


Thaddeus was appointed Chief Executive Officer of AT&T Business in December 2016. He is responsible for the company's integrated global business organization, which serves nearly 3.5 million business customers in nearly 200 countries and territories, including nearly all of the world's Fortune 1000 companies.

His customer base spans across the public sector, including federal, state and local agencies; multinational corporations around the globe; medium and small businesses; as well as wholesalers and partners.

Thaddeus has vast experience driving strategic growth through change. He boldly uses innovation to fuel disruptive business models in consumer and business segments. And, he knows the value of customer engagement. His experience transforming business models, introducing competitive market offerings and improving customer experiences provide a strong foundation for his current role.

Previously, Thaddeus was CEO of AT&T Mexico, LLC. The Mexico City-based wireless service provider operates under the AT&T and Unefon brand names. Thaddeus led the ongoing expansion of AT&T high-speed mobile network and distribution channels in Mexico. The expansion is bringing coverage to millions of additional consumers and businesses and transforming the sales and service experience for customers. 

Throughout his career, Thaddeus has held diverse executive positions. As President-Technology Development, he led the transformation of AT&T’s technology strategy, placing innovation at the forefront. The organization evolved business processes and market offerings, creating new value and velocity for AT&T, customers and partners. Under his leadership as Chief Information Officer (CIO), AT&T was widely recognized for its thought leadership and creativity in technology innovation and execution. Prior to AT&T, he also served as CIO at Cingular Wireless and Senior Vice President of Product Marketing and Development for Sabre Corporation. 

Thaddeus has received vast recognition for his business achievements, thought leadership and innovation. In 2016, he made Quién magazine’s list of “50 People Transforming Mexico” and was included among “Mexico’s 300 Most Influential Leaders” by Líderes Mexicanos magazine. He was named one of CNET en Español’s “20 Most Influential Latinos in Technology” in 2013 and 2015; named to the CIO Hall of Fame by CIO Magazine for “profoundly shaping the technology-driven business landscape” in 2014; and earned MIT Sloan’s CIO Leadership Award for “delivering business value and innovative use of IT in exceptional ways” in 2014. 

He is an active board member for the National Center for Women & Information Technology and the Hispanic IT Executive Council. He is a Governance Fellow with the National Association of Corporate Directors. He also serves on the SMU Cox School of Business Executive Advisory Board. Thaddeus has a BS in mathematics from the University of Texas at Arlington and an MBA from Southern Methodist University.