---
title: "A/B Testing"
description: "A/B testing (split testing) is a method of comparing two versions of a web page, ad, or email against each other to determine which one performs better based on a specific metric like conversion rate."
category: "Digital Marketing & PPC"
date: "2026-03-05"
url: "https://getbeast.io/glossary/ab-testing/"
type: "glossary"
---

# A/B Testing

**Category:** Digital Marketing & PPC | **Updated:** 2026-03-05

A/B testing (split testing) is a method of comparing two versions of a web page, ad, or email against each other to determine which one performs better based on a specific metric like conversion rate.

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## What Is A/B Testing?
A/B testing (also called split testing) is an experiment where two variants of a page, ad, or email are shown to different audience segments simultaneously to determine which performs better. **Variant A** (the control) is compared against **Variant B** (the challenger) based on a target metric (conversion rate, CTR, revenue). The variant with statistically significant better performance wins. Tools include Google Optimize (sunset), VWO, Optimizely, and AB Tasty.

## Why A/B Testing Matters for SEO
A/B testing landing pages improves conversion rates from organic traffic. Testing title tags and meta descriptions can increase organic CTR without changing rankings. **SEO A/B testing** (testing on-page changes across similar page groups) measures the ranking impact of SEO changes. However, be careful: showing different content to Googlebot vs. users is cloaking. Proper SEO testing shows the same content to everyone and measures ranking changes.

## How to A/B Test for SEO
For conversion testing: split traffic between page variants and measure conversion rates. For SEO testing: apply changes to a test group of similar pages while keeping a control group unchanged, then measure ranking and traffic differences. Use tools like SearchPilot or SplitSignal for SEO-specific testing. Always ensure test variants are accessible to Googlebot. Run tests long enough for statistical significance.

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## Related Terms

- [Conversion Rate](/glossary/conversion-rate/)
- [Landing Page](/glossary/landing-page/)
- [CPA (Cost Per Acquisition)](/glossary/cpa/)
- [Click-Through Rate](/glossary/click-through-rate/)
- [Cloaking](/glossary/cloaking/)


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*Part of the [GetBeast SEO Glossary](/glossary/). Visit [GetBeast.io](https://getbeast.io) for professional SEO and log analysis tools.*