A virtual assistant is an AI-driven software application designed to perform tasks and provide services to users through natural language processing (NLP) and machine learning capabilities. These assistants can understand and respond to user queries, execute commands, and offer personalized recommendations based on user preferences and behaviors. Virtual assistants are commonly found in various forms, including chatbots, voice-activated devices, and customer support tools. Examples include Amazon's Alexa, Apple's Siri, and Google Assistant. By leveraging AI technologies, virtual assistants enhance user experience, streamline processes, and facilitate efficient interactions between users and digital systems, making them an integral part of modern technology ecosystems.