Which retail analytics innovation, first implemented in the 1990s, pioneered the use of purchase history to predict future buying behavior and is now considered the foundation of modern personalized marketing?

In the world of retail, data analytics has transformed how businesses understand customer behavior and make decisions. But do you know which groundbreaking analytical innovation revolutionized the retail landscape and became the foundation for modern personalized shopping experiences? This poll tests your knowledge about a pivotal discovery in retail analytics that forever changed how retailers interact with consumers and analyze purchasing patterns.

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Collaborative filtering algorithms, first used by Amazon's recommendation system
RFID inventory tracking systems developed by Walmart
Google Analytics' e-commerce tracking functionality
Beacon technology for in-store customer movement tracking