The short version
Conversion rate optimization (CRO) is a repeatable process for understanding why people don’t take a valuable action, then changing and testing the experience so that more of them can.
Think of a shop where many people walk in, look around and leave. CRO is not shouting louder at the door. It is finding out why they leave: they couldn’t find the size, the price was unclear, the queue was too long, and fixing those things.
Four things CRO is not
- Not hacks. “Ten tricks to double conversions” ignores your users and your context.
- Not a redesign. Changing everything at once makes it impossible to know what helped.
- Not only A/B testing. Tests check ideas; research produces good ideas.
- Not manipulation. Fake urgency or hidden costs are dark patterns, not optimization.
Why research comes first
If you change things based on opinion, you are guessing, and most guesses don’t work. That is why the method you’ll learn, WXM, begins with Wonder: look at what people actually do before you touch anything.
Recap
- CRO = evidence → change → validation → rollout, repeated.
- It serves a business outcome, not a vanity metric.
- It starts by understanding people.
Read more in the guide What is CRO?.
Practical exercise
Pick one website you use often. Write down one action the business wants you to take there, and one thing that has ever made you hesitate before taking it. That hesitation is where CRO starts.