Which retail AI innovation, first widely implemented by Amazon in 2012, used machine learning to revolutionize inventory management and dramatically reduce out-of-stock scenarios?

The retail landscape has been dramatically transformed by technological innovations over the decades. Artificial intelligence has played a particularly significant role in reshaping how we shop and how retailers operate. This trivia question focuses on a breakthrough AI implementation that revolutionized one of the world's largest retailers and subsequently influenced the entire industry. Test your knowledge of how AI has fundamentally changed retail operations!

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Anticipatory Shipping (predicting purchases before they happen)
Facial Recognition Payment Systems
Algorithmic Store Layout Optimization
Real-time Dynamic Pricing Engines