Stephen Howard-Sarin is a senior retail media and commerce media executive who advises companies on how to build, scale, and transform advertising businesses at the intersection of retailers, marketplaces, brands, ad agencies, and ad tech. He has helped build billion-dollar commerce media businesses at eBay, Walmart, Instacart, and Criteo, giving him operating experience across marketplace monetization, retailer-owned media networks, organizational design, self-serve ad platforms, DSP partnerships, and enterprise go-to-market transformation. At Walmart, he was the first external hire brought in to help establish Walmart Connect, serving as VP of Sales and VP of Strategy & Transformation. Most recently, he served as SVP / Managing Director, Retail Media Americas at ad-tech platform Criteo, where he led both RMN supply and demand across 40+ retailers with more than $2 billion in annual commerce media spend across more than $100 billion in multi-category GMV.