---
title: "What is A/B testing?"
canonical: https://www.beehiiv.com/newsletter-glossary/a-b-testing
description: "A/B testing, also known as split testing, compares two newsletters or variations of elements (like subject lines and content) with a subset of your audience. This approach allows for data-driven decision making, as it helps identify which campaign or variation (A or B) resonates better with your target audience."
source: live-converter
generated: 2026-05-12T07:51:30.196Z
---

# What is A/B testing?

-   [Newsletter Glossary](/newsletter-glossary)
-   A/B testing

# A/B testing

A/B testing, also known as split testing, compares two newsletters or variations of elements (like subject lines and content) with a subset of your audience. This approach allows for data-driven decision making, as it helps identify which campaign or variation (A or B) resonates better with your target audience.

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