What problem does it solve? Stores that show identical products and content to every visitor miss conversion opportunities from relevance. This Skill guides merchants through adding personalized product recommendations, dynamic email content, and targeted offers based on browsing behavior, purchase history, and patterns from similar customers. ## Core Features & Use Cases - Platform-Specific Setup Guides: Step-by-step configuration for Shopify (Rebuy, LimeSpot), WooCommerce, BigCommerce, and custom headless stores, with tool recommendations matched to store revenue size. - Custom Recommendation Engine Pattern: TypeScript reference implementation covering behavioral event tracking, Redis-based user profiles with category affinity scoring, and nightly co-purchase similarity batch jobs. - Email Personalization: Instructions for Klaviyo dynamic product blocks using purchase history for personalized recommendations in post-purchase and win-back flows. - Use Case: A sporting goods retailer adds a "Recommended for You" homepage section and "Frequently Bought Together" widgets on product pages, then A/B tests personalized recommendations against a control group to measure AOV lift before full rollout. ## Quick Start Set up personalized product recommendations on my Shopify store using Rebuy, including a Recommended for You section on the homepage and cross-sell widgets in the cart.