Natural Language Processing (NLP) NLP is the branch of AI that deals with understanding and processing human language. It's what powers voice assistants like Siri and Alexa, and it's becoming increasingly important as more and more of our interactions with technology are through voice commands. NLP is also being used to analyze large amounts of text data, which has a variety of applications, from customer service to sentiment analysis. Free hacks Natural Language Processing (NLP) NLP is the branch of AI that deals with understanding and processing human language. It's what powers voice assistants like Siri and Alexa, and it's becoming increasingly important as more and more of our interactions with technology are through voice commands. NLP is also being used to analyze large amounts of text data, which has a variety of applications, from customer service to sentiment analysis.