Microsoft Copilot is powered by OpenAI’s models and is woven throughout the Microsoft product ecosystem, appearing in Windows, the Edge browser, Bing, Teams, Word, Excel, and PowerPoint. In Microsoft 365, it can draft emails, summarise long meeting transcripts, generate slide decks from outlines, and analyse spreadsheet data with natural language queries. Its deep integration with the tools millions of knowledge workers use daily gives it a practical productivity advantage over standalone AI assistants.