Which company pioneered the first commercial recommendation engine in retail, forever changing how products are discovered online?

Recommendation engines have transformed how we discover products online, creating personalized shopping experiences that drive sales and customer loyalty. These powerful machine learning systems analyze our browsing history, purchases, and preferences to suggest items we might love. From Amazon's 'Customers who bought this also bought...' to Netflix's personalized content suggestions, these AI systems have become the invisible shopping assistants of the digital age. Test your knowledge about the origins of this game-changing retail technology!

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Amazon with its item-to-item collaborative filtering system in 1998
Netflix with its Cinematch algorithm in 2000
Apple with its iTunes Genius feature in 2002
eBay with its Related Items technology in 1997