Basics Chat and Chatbot

If you want to become better at Chat and Chatbot you have to go through a complete learning cycle about this very specific topic.
Definitions, why, how, for whom : find in this section all the notions related to Chat and Chatbot. Find out all features, benefits and pros & cons of Chat and Chatbot software in order to establish the criteria to make a choice.

Basic notions in Chat and Chatbot