Glossary

multivariate ab testing

Multivariate A/B testing is a randomized experiment that tests multiple variables simultaneously to determine which combination produces the best outcome. It extends traditional A/B testing by allowing researchers to evaluate the interactions between different elements rather than testing them in isolation.

Context and Usage

This testing method is commonly used in digital marketing, web design, and user experience optimization. Marketers, product managers, and UX researchers employ multivariate testing to optimize landing pages, email campaigns, and application interfaces by testing multiple design elements like headlines, images, and call-to-action buttons together.

Common Challenges

The approach requires significantly larger sample sizes than simple A/B tests to achieve statistical significance, which can extend testing duration. Complex interactions between variables can make results difficult to interpret, and improper experimental design may lead to invalid conclusions. Multiple testing corrections may be needed to avoid false positives.

Related Topics: A/B testing, statistical hypothesis testing, conversion rate optimization, experimental design, factorial experiments

Jan 22, 2026

Reviewed by Dan Yan