Which product release is widely considered to have revolutionized machine translation by introducing neural machine translation (NMT) to the mainstream in 2016?

The development of language translation technology has transformed global communication over the decades. From early rule-based systems to modern neural networks, the product evolution in this space represents one of the most significant advancements in language technology. This trivia question explores a pivotal moment in the history of AI translation products that changed how we approach machine translation.

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Google Translate's Neural Machine Translation system
Microsoft's Translator Neural Network
DeepL Translator
Facebook's MBART Translation System