What is A/B Testing and Why Does It Matter?
A/B testing lets you compare two versions of a page to see which one performs better. Here's why every product team should be running experiments.
A/B testing (also called split testing) is one of the most powerful tools in a product team's arsenal. Instead of guessing which version of a page or feature will perform better, you let real users decide.
How it works
You split your traffic into two groups:
- Group A sees the original version (the control)
- Group B sees the new version (the variant)
After enough data is collected, you can see which version drives more conversions, signups, or whatever metric you care about.
Why edge-based testing is different
Traditional A/B testing tools inject JavaScript on the page, which causes a flash of unstyled content (FOUC) — users briefly see the original before the variant loads. It's jarring and hurts your results.
Koryla runs experiments at the edge — before the page even reaches the browser. There's no flicker, no layout shift, no performance penalty.
Getting started
- Create an experiment in your Koryla dashboard
- Add the script tag to your site
- Define your variants
- Start collecting data
That's it. No complex setup, no developer bottleneck for every experiment.