This session introduces natural language processing (NLP) and its role in speech applications. Learn what natural language is, the statistical language model (SLM) approach to NLP, when and how to use NLP techniques, and how to combine NLP techniques with grammars and directed dialogues to achieve optimal application performance. Additionally, this session covers commercially available natural language tools, research areas, and newer technology such as the IBM Watson Jeopardy system and Apple Siri. This tutorial is aimed at an audience with a general technical background. Experience developing speech applications would be helpful.