Microsoft 365 and Office 365 service descriptions

Microsoft 365 and Office 365 are cloud-based services designed to help meet your organization's needs for robust security, reliability, and user productivity.

The articles in this library provide detailed descriptions of the services and features that are available with Microsoft 365 and Office 365. For information about Microsoft Dynamics 365 business applications, see Microsoft Dynamics 365 documentation.

To compare features across plans, see Powerful tools to support your enterprise or the relevant service description in the list below.

For support articles and information, see Office Help & Training, Office documentation for admins and IT professionals, and Microsoft 365 help center for admins and IT pros.


If you're looking for the service description comparison spreadsheet, it's been retired. The product feature availability tables on each service description page have been updated to better help you choose the version of Office 365 that suits your needs.

Microsoft offers the FastTrack Center Benefit for Office 365 for eligible services in eligible plans. The benefit lets you work remotely with Microsoft specialists to get your Office 365 environment ready for use. For more information, see FastTrack Center Benefit for Office 365.

To get started, see the following service descriptions:


1 Includes availability of suite features, such as Office Delve, Microsoft MyAnalytics, Microsoft Sway, and Microsoft Teams.


© 2018 Microsoft Corporation. All rights reserved. Microsoft, Office 365, and other product and service names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information provided herein is for informational purposes only and represents the current view of Microsoft Corporation as of the latest publication or revision date of this document. It is not intended to be a service contract, and does not commit Microsoft or the customer to any features, capabilities, or responsibilities mentioned herein. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS DOCUMENT.