Senior Director, Technology & Standards at IAB Tech Lab
As a key technical architect of foundational AdTech standards at IAB Tech Lab, Riordan-Butterworth has had an outsized influence on how programmatic advertising is built and governed, making him essential to any comprehensive AdTech database.
Last updated Apr 18, 2026 by jonholm
Brendan Riordan-Butterworth is a technical standards expert who has played a central role at IAB Tech Lab in developing and evangelizing programmatic advertising standards. He has been instrumental in the development of key specifications including ads.txt, sellers.json, and related supply chain transparency initiatives. His work directly influences how the global AdTech ecosystem operates at a technical level.