What Is Microsoft Copilot? Microsoft Copilot is an AI-powered assistant built into Microsoft 365 apps like Word, Excel, PowerPoint, Outlook, and Teams. It leverages the capabilities of large language models (LLMs) and Microsoft Graph to provide context-aware assistance. From drafting emails to summarizing meetings, Copilot integrates seamlessly into your daily workflow, reducing manual effort and enhancing productivity. Think of it as your intelligent digital co-worker built directly into the tools you already use.