Retention isn’t just a metric, it’s the engine of sustainable growth. At Operabase, Aayur Kaul and his team rebuilt that engine from the ground up. By stripping assumptions, applying first-principles thinking, and embedding machine learning into the user journey, they unlocked a transformation: 3x growth in returning traffic and 4x daily active users within a year.This case study goes beyond theory to show the concrete product strategies, experiments, and data-driven decisions that powered the turnaround — and how you can apply the same principles to your own platform.