LUIS

Language Understanding (LUIS) is a cloud-based conversational AI service that applies machine learning to natural language text to predict overall meaning and pull out relevant, detailed information.

Microsoft Azure's LUIS (Language Understanding) enables developers to build custom NLP models without a data science degree. By defining specific intents (actions) and entities (key data points), users can transform unstructured sentences into structured JSON data. It integrates natively with the Bot Framework and supports 13+ languages, allowing applications to handle complex user requests like 'Book a flight to Seattle for next Tuesday' with high precision. While Microsoft is transitioning core functionality to Azure Cognitive Service for Language, LUIS remains a benchmark for intent classification and entity extraction in legacy and enterprise conversational architectures.

https://www.luis.ai