Shenan Reed — Global Chief Media Officer at General Motors

Shenan Reed has been appointed as Global Chief Media Officer at General Motors, marking a significant leadership move in the intersection of brand-side media strategy and the broader AdTech ecosystem. Reed, a well-regarded figure in the media and advertising industry, brings extensive experience from her prior roles at major agencies and brands. This appointment signals GM's commitment to elevating its media function to a global, strategic level as the automotive industry increasingly competes on digital and data-driven marketing capabilities. In addition to her role at GM, Reed has been named the new Board Chair of the IAB (Interactive Advertising Bureau) for 2025, a dual distinction that underscores her influence across both the advertiser and industry governance sides of the ecosystem. The IAB Board Chair role places her at the forefront of shaping industry standards, policies, and best practices at a time when critical issues such as identity resolution, privacy regulation, and AI-driven advertising are reshaping the landscape. Her leadership at both GM and the IAB simultaneously positions her as one of the most influential figures in advertising for 2025. This convergence of a major advertiser leadership role with a top industry governance position is relatively rare and signals a strong alignment between GM's media ambitions and broader industry direction. It reflects a growing trend of large advertisers taking active roles in shaping the standards and technologies that govern how media is bought, measured, and optimized.

Reed's dual appointment as GM's Global Chief Media Officer and IAB Board Chair for 2025 has meaningful implications for the AdTech ecosystem. As one of the largest automotive advertisers globally, GM's media strategy decisions carry significant weight with publishers, platforms, and technology vendors. Reed's leadership could accelerate GM's adoption of advanced programmatic buying, data clean rooms, retail media partnerships, and connected TV strategies, influencing how other major advertisers approach similar transformations. Her IAB Board Chair role gives her a platform to drive industry consensus on pressing issues including post-cookie identity solutions, AI in advertising, measurement standardization, and privacy-compliant data practices. This could benefit AdTech vendors whose solutions align with IAB standards and frameworks she may champion. Competitively, GM's investment in a dedicated Global CMO-level media executive signals that automotive brands are increasingly treating media as a core strategic function rather than a procurement exercise, which may pressure competitors like Ford, Stellantis, and Toyota to similarly elevate their media leadership. The appointment also reinforces the growing influence of the buy side in shaping AdTech infrastructure and standards, a trend that could shift negotiating dynamics between advertisers and technology platforms.