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Tomás Lajous

Senior PartnerNew York

Advises telecommunications, digital infrastructure, and private-equity clients, focusing on corporate and business unit strategy, AI, regulation, and M&A

Tomás first joined McKinsey’s Mexico City office and is now based in New York where he focuses on telecommunications and digital infrastructure projects.

Tomás leads McKinsey’s initiatives in the future of telecom, concentrating on 5G, digital infrastructure, and the implications and use of AI and gen AI. His leadership also extends to a wide range of projects that includes strategy, AI, regulation, spectrum, M&A across telecom, digital infrastructure, and a variety of other sectors.

Examples of his recent work includes:

  • optimizing and strategizing for AI/gen AI opportunities within a utility setting
  • enhancing AI-based network experiences through measurement and application
  • steering the go-to-market strategy for a B2B telecom in managed network services
  • driving an AI-led transformation within a telco consumer operation
  • crafting and deploying a digital twin strategy and deployment in the telecom sector
  • spearheading 5G strategy and conducting spectrum valuation for an integrated telecom

Prior to McKinsey, Tomás worked for UBS, where he was the global media sector strategist, head of Latin America’s Tech, Media, and Telecom division, and head of Mexico’s research and strategy team. During that time, Tomás ranked number one for Mexico coverage in Institutional Investor multiple times and was part of the top-ranked Latin America and Mexico strategy team for over a decade.

Published work

Latinos in Hollywood: Amplifying voices, expanding horizons,” McKinsey & Company, March 2024

Shaping the future of 6G,” McKinsey & Company, February 2024

The network is the product: How AI can put telco customer experience in focus,” McKinsey & Company, February 2024

Beyond the hype: Capturing the potential of AI and gen AI in TMT,” McKinsey & Company, February 2024

How generative AI could revitalize profitability for telcos,” McKinsey & Company, February 2024

Tech talent in transition: Seven technology trends reshaping telcos,” McKinsey & Company, October 2023

The AI-native telco: Radical transformation to thrive in turbulent times,” McKinsey & Company, February 2023

Digital twins: The foundation of the enterprise metaverse,” McKinsey & Company, October 2022

A future for mobile operators: The keys to successful reinvention,” McKinsey & Company, February 2017

A tale of two Mexicos: Growth and prosperity in a two-speed economy,” McKinsey Global Institute, March 2014

Past experience

Executive Director


Courant Institute of Mathematical Sciences, New York University
MS, mathematics

The National Autonomous University of Mexico
Undergraduate degree, mathematics