Which company pioneered the first large-scale commercial recommendation system that significantly influenced modern e-commerce recommendation algorithms?

Recommendation systems have transformed how we shop online, suggesting products based on our browsing history, purchases, and similar users' behaviors. These sophisticated algorithms power the 'You Might Also Like' sections that drive significant revenue for e-commerce giants. Test your knowledge about the origins and evolution of these powerful retail technologies that have changed consumer discovery patterns forever.

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Amazon with its item-to-item collaborative filtering system (1998)
Netflix with its Cinematch algorithm (2000)
eBay with its Related Items system (1997)
Google with its PageRank-based recommendation engine (2001)