What is CRO?

CRO (Conversion Rate Optimization) is the discipline of improving the percentage of visitors who take a desired action. It combines qualitative research with quantitative testing.

The CRO loop

• Research: find the problems
• Hypothesize: what to change
• Test: A/B the change
• Measure: did it move the metric?
• Learn and iterate

What counts as conversion

• Purchase
• Signup
• Demo booking
• Add-to-cart
• Email capture

The compound effect

Small lifts compound. 5% lift every quarter → 22% annual, 85% over 3 years.

Not just for e-commerce

SaaS signup conversion, B2B lead form completion, content site subscription, all benefit from CRO.

What to do with this

• Treat CRO as a force-multiplier on every traffic dollar, small conversion lifts compound across the entire funnel
• Don't start CRO before you have meaningful traffic, under 1K visitors/week tests produce noise, not signal
• Measure revenue per visitor, not just conversion rate, a "higher conversion" at lower AOV can be net negative
• Apply CRO discipline to every page type (landing, product, checkout), each has different optimal levers
• Budget CRO as ongoing investment, not one-time project, conversion drift is real and competitors catch up fast