James Rosenblatt

James Rosenblatt is best known as the founder and CEO of Scope3, the company he built to tackle one of AdTech's most overlooked problems: the significant carbon footprint generated by digital advertising infrastructure. Scope3 has become the de facto standard for measuring and reducing emissions across the programmatic supply chain, partnering with major brands, agencies, DSPs, and SSPs to bring environmental accountability to media buying. Rosenblatt's work has fundamentally shifted industry conversations, making sustainability a boardroom-level concern rather than a peripheral CSR topic. Before founding Scope3, Rosenblatt built deep expertise in programmatic advertising and media trading. He served as Chief Revenue Officer at Infectious Media, a pioneering programmatic trading and analytics firm that was subsequently acquired by GroupM. This background gave him an intimate understanding of the complexity and scale of the programmatic ecosystem — knowledge he has applied directly to mapping and quantifying its environmental costs. Rosenblatt is widely regarded as the foremost evangelist for sustainable advertising, regularly speaking at major industry events including Cannes Lions, Advertising Week, and IAB conferences. He has been instrumental in pushing trade bodies and major holding companies to adopt emissions measurement as a standard practice, positioning Scope3 not just as a product but as critical infrastructure for a greener advertising industry.

• University of Pennsylvania

• Founded Scope3, the first comprehensive carbon emissions measurement and reduction platform purpose-built for the digital advertising industry
• Raised significant venture funding to scale Scope3 into a recognized infrastructure provider across the global programmatic ecosystem
• Drove adoption of emissions measurement standards among major holding companies, brands, and ad tech platforms
• Led Infectious Media through its acquisition by GroupM, one of the world's largest media investment groups