How do I set up A/B testing for conversion optimization?

Setting up A/B testing starts with identifying what to test based on data—look for high-traffic pages with conversion potential. Formulate clear hypotheses like 'Changing the CTA color from blue to green will increase clicks by 10%'. Choose an A/B testing platform that integrates with your site. Create variants ensuring they're significantly different to detect meaningful changes. Set up proper tracking to measure conversions accurately. Determine sample size needed for statistical significance—typically need thousands of visitors per variant. Run tests for at least one full business cycle (week or month). Analyze results using statistical significance calculators. Implement winners and iterate.