PayPal's $180 million experimentation win

The Experimentation Edge · Sep 30, 2026 · 31m · transcript

Summary

Gaurav Sethi joins Ashley Stirrup on The Experimentation Edge to explain how PayPal's experimentation program went from 700 to 800 tests a year with four week readouts to 2,587 experiments a year and roughly $180 million in measured impact. Gaurav inherited a reported win rate of 55% to 60%, four times the industry average, and traced it to experiments logging assignment data instead of exposure data, carrying 25% to 30% dilution. The conversation covers the exposure event his team introduced, the instrumentation and metric standards that cut readouts to 24 hours, a carousel test that…