Which linguistic technology was first widely adopted by major e-commerce platforms to dramatically improve product search relevance across multiple languages?

In the digital marketplace, language plays a crucial role in how products are discovered, marketed, and sold. From search algorithms to multilingual customer experiences, linguistic innovations are transforming e-commerce. This trivia question explores a fascinating intersection of computational linguistics and retail innovation that has revolutionized how we shop online.

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Neural Machine Translation (NMT) with cross-lingual embeddings
Grammar-based search syntax with Boolean operators
Phonetic matching algorithms (Soundex and Metaphone)
Rule-based part-of-speech tagging for product descriptions