A voice assistant is a software tool that can be used to enable human-computer interaction through spoken commands. Alexa, Siri, and Cortana are all examples of popular voice assistants. Voice assistants may assist with navigation, information retrieval, calling functionality (Siri), or other features. For example, the Amazon Echo (which uses the Alexa voice assistant) can provide news updates or turn off connected home appliances using only spoken commands.
Topics related to voice assistants include virtual helpers, intelligent agents, chatbots, conversational design, natural language understanding, and data collection. Additional topics related to voice assistants may include smart speakers, IoT appliances, and conversational interfaces.