How do Chatbots work? A Guide to the Chatbot Architecture - Maruti Techlabs

At first, Chatbot can look like a normal app. There is an application layer, a database and APIs to call external services. In a case of the chatbot, UI is replaced with chat interface. While Chatbots are easy to use for users, it adds complexity for the app to handle. There is a general worry that the bot can't understand the intent of the customer.