Which e-commerce innovation first introduced the marketplace model where third-party sellers could list products alongside the platform's own inventory?

The e-commerce landscape has transformed dramatically over the past two decades, with platforms continuously evolving to meet consumer demands and technological advancements. Understanding the history of major platform developments helps predict future trends in online retail. Test your knowledge about a significant milestone in e-commerce platform history that changed how businesses approach online sales.

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Amazon's 'Marketplace' launched in 2000
eBay's 'Buy It Now' feature introduced in 2002
Alibaba's 'Taobao' platform launched in 2003
Etsy's handmade goods platform established in 2005