NLU stands for Natural Language Understanding, which is a technology that allows computers to understand and interpret human language. NLU involves analyzing and processing natural language input from users and converting it into structured data that computers can understand and act upon. NLU is a key component of many conversational AI systems, such as chatbots and virtual assistants, and is used to enable human-like interactions between computers and users. NLU uses techniques from natural language processing, machine learning, and artificial intelligence to understand the intent behind user input and respond appropriately. NLU is an important area of research in artificial intelligence and is expected to have a significant impact on the development of intelligent conversational agents and other applications.