What is Split Testing?
Directing different portions of traffic to completely different page versions to compare performance, often used interchangeably with A/B testing but technically referring to URL-level splits.
Understanding the Details
Split testing sends different visitors to entirely different URLs — unlike A/B testing which typically modifies elements on the same URL. This is useful for testing radically different page designs, entirely new page layouts, or comparing different landing page approaches. Split testing is simpler to implement (just redirect traffic) but harder to manage for SEO (multiple URLs for the same content need canonical tags). In practice, 'split testing' and 'A/B testing' are often used interchangeably, though technically they differ in implementation. The core principle is the same: randomly assign visitors to variants, measure conversion differences, and make data-driven decisions.
How It Works in Practice
Landing page redesign
50% of paid traffic goes to the existing landing page at /pricing and 50% to a completely redesigned version at /pricing-v2.
Homepage variants
Split testing two radically different homepage approaches — product-focused vs problem-focused — to determine which resonates better with visitors.
Registration flow
Two different signup flows with different step sequences are tested by splitting traffic at the /signup URL.
Why It Matters
Split testing enables comparison of fundamentally different approaches, not just element variations. When you need to test radically different strategies, split testing provides the framework.
What People Often Get Wrong
Split testing and A/B testing are exactly the same. Actually, split testing refers to URL-level splits while A/B testing modifies elements on the same URL.
Split testing requires special tools. Actually, simple server-side redirects can implement split tests, though testing tools add measurement and analysis.
You need high traffic for split testing. Actually, you need enough traffic for statistical significance, which depends on the expected effect size.
How We Handle Split Testing
We use split testing for comparing significantly different page approaches, and element-level A/B testing for iterative optimisation within established page designs.
Common Questions
Need Help With Split Testing?
If you'd like to discuss how split testing applies to your business, we're happy to explain further.