Which e-commerce giant was the first to implement item-to-item collaborative filtering for product recommendations, patenting this technology in 1998?

Test your knowledge about the evolution of artificial intelligence in retail recommendation systems! These sophisticated algorithms have transformed how we shop online, creating personalized experiences that drive sales and customer loyalty. Behind today's seamless 'you might also like' suggestions lies a fascinating history of innovation, competition, and breakthrough technology that changed retail forever.

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Amazon
eBay
Alibaba
Walmart