In the first 90 days, a new revenue operations (RevOps) leader or a leader standing up a RevOps function must clarify purpose; build cross-functional trust; and lay the foundation for scalable, insight-driven performance. This period is critical for assessing processes, defining scope, and activating strategic initiatives that align marketing, sales, product, and customer success. In this report, we outline how achievement in the first 90 days requires balancing quick wins with foundational improvements that support long-term transformation and strengthen operational resilience, enabling the organization to adapt, absorb disruption, and sustain performance under pressure.