This document discusses the architecture and components of a chatbot development system. It describes how fetchers retrieve data from various sources like search APIs, social media APIs, and message queues. A matcher component handles matching user inputs to responses. Other components include a search API, dispatcher, pusher to send messages, and scenarios to define dialog flows. It is built using technologies like PHP, Symfony framework, MySQL, Solr, Redis, Beanstalkd, and deployed with Ansible.