Which linguistic innovation did Amazon first implement in 2015 that dramatically improved cross-language product discovery and significantly increased international sales?

In today's global e-commerce landscape, linguistic innovation plays a crucial role in how brands connect with customers across different markets. From AI-powered translation tools to culturally-adapted marketing campaigns, language technologies have transformed online retail. This trivia question explores a significant linguistic trend that revolutionized how multilingual e-commerce operates.

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Neural machine translation for product descriptions
Culturally-adapted product categorization taxonomies
Semantic search capabilities across 12 major languages
User-generated translation validation system