Which company pioneered the first large-scale product recommendation engine that used collaborative filtering to suggest 'Customers who bought this item also bought...' items?

In today's competitive retail landscape, artificial intelligence has transformed how businesses connect products with consumers. Recommendation engines now power many of our shopping experiences, subtly guiding our purchasing decisions while creating personalized experiences. This poll tests your knowledge about the origins of this transformative retail AI technology that has become ubiquitous in modern e-commerce platforms.

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Amazon (1998)
Netflix (2000)
eBay (1997)
Walmart (2001)