What is Microsoft 365?

Microsoft 365 is a cloud-based productivity suite that brings together familiar Microsoft Office apps like Word, Excel, PowerPoint, Outlook, OneNote, and Teams with secure cloud services such as OneDrive, SharePoint, Exchange Online, and advanced security and management tools. It sits at the center of the office-suites, email-client, calendar, spreadsheets, presentation, and cloud-content-collaboration categories, consolidating day-to-day work into one subscription for individuals, small businesses, and large enterprises. Millions of organizations worldwide - including enterprises across finance, government, education, and retail - run their documents, emails, meetings, and collaboration on Microsoft 365 at global scale.

Originally launched as Office 365, it evolved from a subscription version of the desktop Office suite into a comprehensive, AI-powered cloud platform. Microsoft rebranded Office 365 to Microsoft 365 as it added Teams, advanced security, device management, and Microsoft 365 Copilot to the core offering. Today, Microsoft 365 spans consumer, business, enterprise, education, and government plans, all built on the same cloud architecture but tuned to different security, compliance, and collaboration needs.