Glossary
Microsoft 365
Microsoft's subscription bundle of Office apps and cloud productivity services.
Microsoft 365 is Microsoft's flagship productivity subscription. It includes the desktop Office apps (Word, Excel, PowerPoint, Outlook), cloud services for email (Exchange Online), file storage (OneDrive, SharePoint), and collaboration (Teams), along with identity and security tooling built around Microsoft Entra ID.
Microsoft 365 replaced the older "Office 365" branding in 2020. The two names refer to broadly the same product line, but Microsoft 365 plans also include Windows licensing and device-management features on the higher tiers. Plans are sold in Business, Enterprise, Frontline, Education, and consumer families.