Which pioneering e-commerce company implemented the first large-scale item-to-item collaborative filtering recommendation system that suggested products based on "Customers who bought this also bought..."?

Retail recommendation systems have revolutionized how online stores suggest products to customers. These AI-powered systems analyze browsing history, purchase patterns, and demographic data to create personalized shopping experiences. The most sophisticated recommendation engines can significantly boost conversion rates and average order values. Test your knowledge about these powerful tools that have transformed e-commerce and shaped consumer behavior in the digital age.

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Amazon
eBay
Netflix
Alibaba