Which linguistic innovation was FIRST widely adopted by major e-commerce platforms to significantly improve product discoverability?

The intersection of language technology and e-commerce platforms has revolutionized how we shop online. From multilingual capabilities to AI-powered language processing tools, modern e-commerce platforms leverage linguistics in fascinating ways. This trivia question explores how language technology has shaped the development of major online retail platforms. Test your knowledge about the evolution of language features in the digital marketplace!

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Natural Language Search (allowing customers to search using conversational phrases rather than keywords)
Automatic language translation for product listings (enabling cross-border selling without manual translation)
Sentiment analysis of customer reviews (algorithmically determining positive/negative opinions)
Voice-activated shopping assistants (enabling purchases through spoken commands)