Microsoft 365 provides: Exchange Online for email, Teams for collaboration, SharePoint Online for content management, OneDrive for file storage, and the Microsoft Graph API that connects every M365 service. M365 is now the data layer for Microsoft Copilot — the quality of your SharePoint content, email organization, and Teams channels directly affects what Copilot can surface and summarize.
Enterprise M365 requires: Entra ID for identity, conditional access for security, sensitivity labels for data classification, retention policies for compliance, and the information architecture (SharePoint site structure, metadata, naming conventions) that determines both human and AI discoverability of content.