Joanna Mastroianni

Joanna Mastroianni is a senior programmatic advertising executive known for her expertise in supply-side strategy and publisher monetization at scale. As SVP of Global Partnerships at Index Exchange, she leads the company's efforts to deepen relationships with publishers and supply-side partners, helping them navigate the complexities of programmatic advertising, header bidding, and real-time bidding in an increasingly fragmented digital landscape. Mastroianni has built her career at the intersection of publisher development and programmatic technology, developing a reputation for architecting partnership frameworks that align publisher revenue goals with advertiser demand quality. Her work at Index Exchange reflects a broader industry focus on transparency, supply path optimization, and sustainable monetization models for premium publishers. Her tenure in the AdTech industry spans roles focused on growing supply-side ecosystems and forging strategic alliances across the programmatic stack. She is regarded as a knowledgeable voice on the evolving challenges facing publishers, including identity resolution in a post-cookie environment and the ongoing shift toward more direct and curated programmatic supply paths.

• Leads global partnership strategy at Index Exchange, one of the world's largest independent advertising exchanges
• Recognized for driving supply-side innovation and publisher monetization frameworks at scale