A conversational user interface is the ability of artificial intelligence-supported chatbots to have verbal and written interactions with human users.
Interactive Voice Response (IVR) is an automated telephony system that interacts with callers, gathers information and routes calls to the appropriate recipients.
Speech analytics is the process of analyzing voice recordings or live customer calls to contact centers with speech recognition software to find useful information and provide quality assurance.
A virtual agent (sometimes called an intelligent virtual agent, virtual rep or chatbot) is used to describe a program based in artificial intelligence (AI) that provides automated customer service.
A digital assistant is an application program that can understand natural human language and complete electronic tasks for the end user.