LUIS(Language Understanding Intelligent Service) is a Azure-based API for natural language processing. It is very useful and easy to apply conversational system. However, LUIS has so many features and documentation is huge, and sometimes I am lost where to start with it. So, I strongly recommend starting learning basic features, (like Simple Entity, List Entity) and understanding its fundamentals first. Next important thing is where you apply. And then you create suitable utterances and entities for intents. Finally, you can use additional features (like Pattern.any Entity, Hierarchical Entity, Composite Entity, Phrase Pattern, etc.)
