Sarah Marzano

Sarah Marzano is one of the leading analyst voices on commerce media, a category encompassing retail media networks, shoppable advertising, and the broader integration of commerce signals into advertising. As VP and Principal Analyst at eMarketer (part of Insider Intelligence/EMARKETER), she produces research, forecasts, and commentary that shape how brands, retailers, and agencies understand and invest in retail media — a sector that has grown to rival traditional digital advertising channels in scale and strategic importance. Marzano's work at eMarketer focuses on the mechanics and business models of retail media networks, including players such as Amazon Advertising, Walmart Connect, Kroger Precision Marketing, and emerging entrants from across the retail landscape. Her analysis covers advertiser adoption, monetization strategies, measurement challenges, and the competitive dynamics between established platforms and newer commerce media entrants. She is frequently cited in trade press and speaks at industry events on topics ranging from first-party data strategy to the future of closed-loop attribution. Before her current role, Marzano held positions in marketing and strategy within the consumer packaged goods and retail sectors, giving her practitioner-level insight that informs her analyst perspective. Her combination of hands-on industry experience and rigorous research methodology has made her a trusted resource for executives navigating the rapidly evolving commerce media landscape.

Last updated Oct 2, 2026 by ATDb automated enrichment · Connections updated Oct 5, 2026