Ecommerce Glossary

What Is A/B Testing?

A/B testing is a method of comparing two versions of a product, webpage, or feature to determine which one performs better by showing each version to a random segment of users and measuring their responses.

How Do You Calculate A/B Testing Results?

To calculate A/B testing results, you first split your visitors into two groups so each group sees a different version. Then you compare the conversion rate (CVR) of Version A and Version B using this formula:

Once both CVRs are calculated:

• If CVR(B) > CVR(A) → Version B performs better
• If CVR(A) > CVR(B) → Version A performs better

The version with the higher conversion rate is the one that encouraged more people to take action—click, sign up, or buy.

What Can You Test With A/B Testing?

A/B Testing lets you test small changes to see which version gets better results.

• Different headlines
• Product images or lifestyle photos
• “Add to Cart” button style
• Short vs. long descriptions
• Offer messages like “10% off”
• Checkout steps or form changes

Why A/B Testing Matters for Online Stores?

A/B testing shows what actually makes people click and buy.

It helps you:

• Spot designs shoppers interact with more
• Find headlines and buttons that lead to higher sales
• Fix small issues that quietly hurt conversions
• Raise your Conversion Rate without needing more traffic
• See what customers notice, ignore, or struggle with
• Make safer changes backed by real behaviour

Stores keep testing because small wins stack up—and often reveal problems they didn’t even know were there.

How To Use A/B Testing to Improve Sales?

You can use A/B Testing to improve sales by finding which version of your page or message makes more people buy. It’s one of the most dependable Shopify CRO strategies because every test teaches you something about how real shoppers behave.

• Test headlines that explain the product better
• Try different photos to see which gets more clicks
• Change the button text or colour to make it clearer
• Compare short vs. long descriptions
• Test offers like free shipping or small discounts
• Keep the winning version and test again

How Shopify Supports A/B Testing?

Shopify doesn’t run A/B Tests on every part of your store, but it gives you enough ways to try things without making a mess. You can switch between versions, change small parts, and see what feels better for real shoppers.

Most stores end up using things like:

• A second copy of the theme to test a different layout
• Simple page-builder apps that let you try a new design fast
• Email tools that test subject lines or messages
• Small changes in checkout (only when the setup allows it)
• Quick edits in the product page to see what people react to

It’s not fancy, but it’s enough to test ideas without breaking anything.

What Mistakes Should You Avoid With A/B Testing?

A/B Testing doesn’t work well when the tests are unclear or changed too quickly.

• Running several tests at once on the same page
• Stopping the test before enough people have seen it
• Choosing big changes instead of small, clear ones
• Ignoring data and going with a guess
• Testing features that don’t affect buying decisions

Fixing these mistakes turns A/B testing from guesswork into a repeatable system for improving your store. If you’d rather have a team run structured tests for you, our Shopify CRO service handles the full process.