Microsoft Copilot is an AI-powered productivity tool integrated into the Microsoft 365 suite. It enhances user productivity by automating tasks, providing real-time insights, and streamlining workflows across applications like Word, Excel, PowerPoint, Outlook, and Teams. Copilot leverages large language models (LLMs) to generate responses relevant to user tasks, and it includes features such as smart suggestions, personalization, and data analytics, all aimed at improving collaboration and decision-making processes.