Let’s be honest—this process isn’t easy. It’s challenging, time-consuming, and requires a disciplined, structured approach to testing and iteration.
But the financial rewards?
They are unparalleled. Every single test you run holds the potential to significantly improve your bottom line.
The 2% Monthly Increase Strategy
You’ve probably seen bold claims like:
“Boost your conversion rate by 35% in just two weeks with one simple test!”
Let’s call these claims what they are: bogus.
They’re marketing plots, designed to book demo calls—not to reflect reality.
The reality?
A comprehensive study by the University of Pennsylvania analyzed the impact of single A/B tests across 252 eCommerce companies. The findings were clear:
Analysis of Effect Size of single A/B Test across 252 E-Commerce different companies
Uplifts from single tests rarely exceed 2%. When people see this, their instinct is to dismiss testing altogether. But they’re missing the bigger picture: the power of compounding.
The Compounding Effect of CRO
Compounding is a foundational principle in finance. For example, if you save €500/month in an ETF or bonds, the interest payments will eventually outgrow your initial contributions.
The same principle applies to CRO. A 2% uplift may seem small on a monthly basis, but over six months, a year, or even five years, the impact becomes exponential.