Online product recommendations have become the gold standard for customer service in ecommerce. Personalized suggestions improve the shopping experience, increase sales, and enhance customer retention and loyalty. Recommendation engines use machine learning and artificial intelligence to generate relevant content or highlight types of products based on customers' interests. The best kind of recommendations are dynamic, adjusting in real-time according to a shopper's activity on an ecommerce site. As technology advances, the role of recommender systems will continue to grow, potentially replacing traditional word-of-mouth recommendations from friends and family.