What tools do I need for A/B testing?

Essential A/B testing tools include a testing platform (Optimizely, VWO, Google Optimize, or custom solutions), analytics platform (Google Analytics) for tracking conversions, heatmap tools (Hotjar) to understand user behavior, and statistical calculators to determine sample sizes. For advanced needs, consider tools for personalization, feature flags, and advanced analytics. The platform choice depends on your traffic volume, technical capabilities, and budget. Many platforms offer free tiers for small sites. Integration with your analytics is crucial for accurate tracking. Example: A mid-size e-commerce site uses VWO for testing, Google Analytics for tracking, and Hotjar for understanding user behavior, providing a complete testing toolkit.