Definition
CRO (Conversion Rate Optimization)
CRO is the systematic process of testing and improving a website or funnel to increase the percentage of visitors who take a desired action.
CRO relies on structured hypothesis testing — reviewing analytics and session recordings, forming a specific hypothesis about what’s causing friction, then running an A/B test to validate it — rather than redesigning a page based on personal taste. Because CRO improves the conversion rate of existing traffic, gains compound across every other channel feeding that page, making it one of the highest-leverage investments once a site has meaningful traffic volume.