Canonical: https://www.strataigize.com/glossary/conversion-rate-optimization/
Description: Conversion Rate Optimization (CRO) is increasing the share of visitors who take a valuable action, using research, experimentation, and measurement.

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SEO & Web

# Conversion Rate Optimization (CRO).

Definition

## What it _means._

Conversion Rate Optimization (CRO) is the discipline of increasing the share of visitors who take a valuable action, using research, experimentation, and measurement rather than taste. Done properly it is a statistics practice: hypotheses from evidence, tests sized to detect real effects, and verdicts that admit what a test cannot say.

Worked example

## In _practice._

Session replays show visitors stalling at a long form. The team tests a three-field version against the original, choosing the minimum detectable effect, sample size, and decision rule before launch. It evaluates the result’s uncertainty, practical value, and lead quality before shipping. Exceeding the planned effect size alone does not establish statistical significance.

Where this work happens: [Conversion Rate Optimization](https://www.strataigize.com/services/website-optimization/conversion-rate-optimization/)

Related terms

-   [Core Web Vitals](https://www.strataigize.com/glossary/core-web-vitals/)
-   [Incrementality](https://www.strataigize.com/glossary/incrementality/)

## Put it in _context._

Bring your growth question to a free 30-minute consultation. We can work through what the numbers mean and which changes to consider.

[Book a growth consult →](https://www.strataigize.com/audit/)