What is conversion rate optimization (CRO)?

Conversion rate optimization is the discipline of turning more of your existing visitors into leads and customers — by finding where people hesitate or leave, and systematically removing the reasons.

The work is evidence-first: analytics and session behavior show where the journey breaks; the fixes are usually unglamorous — clearer headlines that match what the visitor came for, fewer form fields, a phone number that's tappable, proof near the point of decision, pages that load fast on a phone.

It's the highest-leverage work in most marketing stacks because it multiplies everything upstream: the same traffic, ads, and SEO produce more revenue after every improvement — and the gains are permanent, not rented.