A virtual assistant is a software agent that can perform tasks or services for an individual based on verbal or written commands. These AI-powered tools are designed to assist users with various activities, such as setting reminders, answering questions, or managing schedules. Examples include Apple's Siri, Amazon's Alexa, and Google Assistant. Virtual assistants utilize natural language processing (NLP) and machine learning algorithms to understand and respond to user requests. They enhance productivity and provide convenience by automating routine tasks, contributing significantly to the growing field of artificial intelligence.