Which company was the first to implement a large-scale product recommendation system in retail, introducing the 'customers who bought this also bought' feature?

Recommendation systems have revolutionized how consumers discover products online. These intelligent algorithms analyze user behavior, purchase history, and preferences to suggest items shoppers might like. Today, they're a cornerstone of e-commerce strategy, driving up to 35% of sales for major retailers. But do you know which company pioneered this game-changing retail technology? Test your knowledge about the origins of personalized shopping experiences!

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Amazon (1998)
eBay (1997)
Netflix (2000)
Walmart (1996)