Which AI-powered retail innovation was first to achieve widespread adoption among major retailers, fundamentally changing customer experience standards?

Artificial intelligence has transformed the retail landscape dramatically in the past decade. From inventory management to personalized recommendations, AI technologies have revolutionized how retailers operate and engage with customers. This trivia question tests your knowledge about a pivotal moment in retail AI history that changed the industry's trajectory and set new standards for customer experience. Do you know which AI implementation marked the turning point for mainstream retail adoption?

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Amazon's recommendation engine (collaborative filtering system)
Walmart's automated inventory management system
Target's predictive analytics for customer targeting
Home Depot's visual search technology