Why test at all
Opinions are cheap and often wrong. A/B testing shows what actually moves the metric for *your* audience — and protects you from shipping changes that quietly hurt.
Run valid tests
- Change one thing at a time (or use structured multivariate) so you know what caused the result.
- Pick one primary metric before you start (e.g., lead submissions).
- Get enough sample size — ending a test early on a hot streak is the most common mistake. Small traffic means longer tests or bigger, bolder changes.
- Run full weeks to cover weekday/weekend behavior.
- Beware false positives — a "winner" on tiny data is often noise.
What to test
Start with high-impact elements: headlines, primary CTA, hero offer, page layout, form length, pricing presentation. Test big swings first; micro-tweaks rarely justify the time at low traffic.
Low-traffic alternative
No traffic for statistical tests? Make confident best-practice fixes, ship them, and watch the trend over time. Some signal beats paralysis. GrowMyWebsite supports CTR A/B testing and surfaces what to try next.