The CRO Loop: Research → Hypothesis → Test → Learn

Why this matters

CRO without a structured loop produces random changes dressed up as optimization — the loop is what separates teams that compound learning from teams that run cosmetic tests and wonder why nothing improves. Every step feeds the next: research surfaces hypotheses, tests validate or refute them, and learning sharpens the next round of research.

Try it yourself

1. Map your last three site changes against the four loop stages and flag which stages were skipped — most teams skip research and jump straight to hypothesis.
2. Take one pending optimization idea and write the research question it is answering before you touch any design tools.
3. Write the 'learn' entry for a test you ran in the past 60 days: what the result told you about user behavior beyond just winning or losing.

References

• Optimizely — CRO Process