Jeffrey Cesari is an Event Ecosystem Architect who has built, scaled, sold, and started over. He founded and led an award-winning meeting agency for 15+ years, then ran global congress strategy at Bristol Myers Squibb across 42 markets and contributed to the BMS–Celgene acquisition integration before leading a $150M Strategic Events portfolio at Genentech with a team of 23.

Jeffrey Cesari is an Event Ecosystem Architect who has built, scaled, sold, and started over. He founded and led an award-winning meeting agency for 15+ years, then ran global congress strategy at Bristol Myers Squibb across 42 markets and contributed to the BMS–Celgene acquisition integration before leading a $150M Strategic Events portfolio at Genentech with a team of 23. Today, as Principal of XO Consulting LLC, he advises enterprise organizations on strategy, operations, and experience transformation. A 2026 CMP Fellow with work across 50+ countries and 6 continents, he is a regular voice in the trade press and speaks on event strategy, leadership, and reinvention.