Which major retailer was the first to implement a machine learning algorithm for product recommendations at scale, fundamentally changing e-commerce in 2003?

Artificial intelligence has transformed how retailers understand customer behavior, manage inventory, and create personalized experiences. While today's AI applications in retail are widespread, the journey began with pioneering implementations that changed the industry forever. Test your knowledge about the early adoption of AI in retail that set the foundation for today's sophisticated systems. This question explores a significant milestone in retail technology history that shaped modern business practices.

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Amazon with its item-to-item collaborative filtering system
eBay with its BiddingBuddy predictive auction system
Walmart with its SMART inventory forecasting platform
Target with its RedPredict customer segmentation algorithm