Which company first successfully implemented large-scale dynamic pricing (also called yield management) that became the industry standard for modern e-commerce?

In the world of retail, pricing strategies have evolved dramatically with technological advancements. One revolutionary approach fundamentally changed how products are priced in competitive markets. This pricing innovation allowed retailers to maximize revenue by adjusting prices in real-time based on various factors including demand, competition, and even individual customer behavior. Test your knowledge about this game-changing retail invention that transformed e-commerce and beyond!

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American Airlines (1985)
Amazon.com (1999)
Walmart (1991)
eBay (1997)