A/B Testing Platform

A/B Testing Platforms enable experimentation. Features: Visual editor (change elements without code), Traffic splitting (50/50 or custom), Statistical significance calculation, and Multi-variate testing (test multiple changes). Popular platforms: Google Optimize (free, discontinued 2023), Optimizely (enterprise, $50k+/year), VWO (mid-market, $200-$2k/month), Convert (privacy-focused), and AB Tasty. What to test: Headlines, CTAs, Images, Pricing, Form length, and Page layout. Best practices: Test one variable at a time (isolate impact), Run until statistical significance (95%+ confidence), and Implement winners permanently. Common mistakes: Stopping tests too early, Testing too many variations (splits traffic thin), and Not validating with analytics. A/B testing can improve conversion rates by 20-50% over time.