Dynamic Yield is a platform that uses machine learning to personalize digital customer experiences through A/B testing, predictive targeting, behavioral messaging, product recommendations, and personalization. It has over 300 global customers and is a leader in Gartner's Magic Quadrant. The document provides examples of how Dynamic Yield was used to optimize product recommendation layouts and homepage banners, reducing bounce rates by 20% and increasing revenue per session by 5.9% with only a small time investment.