Chatbot (also referred to as “virtual assistant”) is a conversational application you may often see on all kinds of websites as a chat window, usually in the bottom right of the screen. This is an AI that communicates with a user, mimicking the interaction with a real person. Chatbots are actively used for customer service and support, helping users find a solution to their problem by answering their questions or redirecting them to a customer support specialist (even having checked their availability if needed). Additionally, chatbots can operate 24/7, providing quick and convenient assistance to users at all times. 

The technology behind chatbots combines AI and natural language processing. The chatbot has a set of pre-defined rules and responses, which it uses to determine the appropriate action to take based on the user's request. This process involves breaking down the user's input into individual words and phrases, understanding the intent behind the words, and selecting a pre-written response or executing a command. The chatbot may also use machine learning techniques to improve its responses over time based on user interactions.