Multivariate Testing (MVT)
Multivariate testing tests multiple element variations at once to find the best-performing combination and reveal which elements drive the most impact. Unlike A/B testing, which compares whole-page versions, MVT changes several components simultaneously, such as headline, image, and button, mapping how they interact.
Why It Matters
It shows not just which single change wins but how elements work together, uncovering interaction effects a series of A/B tests would miss. This helps teams prioritize the components that actually move conversions.
Common Mistake
Running MVT on low-traffic pages. Every added variable multiplies the combinations needed, so without heavy traffic the test never reaches significance and produces inconclusive results that waste weeks.