Graph offers an application programming interface (API) that developers use to connect to a wide range of data — email, calendar events, files, etc. — across Microsoft cloud services.

Microsoft 365 Copilot is an AI assistant built into Office apps like Word, Excel, Outlook, and Teams that uses OpenAI's GPT models and Microsoft Graph to help users generate content, analyze data ...

Microsoft Corp. and OpenAI are investigating whether data from OpenAI’s technology was obtained without authorization by a group linked to Chinese AI startup DeepSeek, sources said.