¹ Azure Information Protection is not included, but can be purchased as a separate add-on and will enable the supported Information Rights Management (IRM) features. Some Azure Information Protection features require a subscription to Microsoft 365 Apps for enterprise, which is not included with Microsoft 365 Business Basic, Microsoft 365 Business Standard, Microsoft 365 F1, Microsoft 365 F3, Office 365 E1, Office 365 A1, or Office 365 F3.
² To learn more about which Azure Information Protection features are included with Microsoft 365 and Office 365 plans, see Azure Information Protection.
³ Office 365 E5 and Microsoft 365 E5 contain Phone System and Audio Conferencing. To implement a Calling Plan requires an additional plan purchase (either Domestic or International).
⁴ Includes 2 GB storage.
⁵ Includes Exchange Online Plan 1.
⁶ Includes Exchange Online Plan 2.
⁷ Includes Exchange Online Plan 1 plus supplemental features.
⁸ Includes Exchange Online Kiosk.
⁹ Includes Skype for Business Online Plan 2 with basic client limitations.
¹⁰ Includes Skype for Business Online Plan 2 without any client limitations.
¹¹ Includes Skype for Business Online Plan 1 plus supplemental features.
¹² Includes Skype for Business Online Plan 2 with voice support and without any client limitations.
¹³ Includes Skype for Business Online Plan 1.
¹⁴ Microsoft Teams is now the primary client for messaging, meetings, and calling in Microsoft 365. As of Oct. 1, 2018, new customers with 500 seats or less are onboarded to Microsoft Teams and do not have access to Skype for Business Online. Tenants that are already using Skype for Business Online are able to continue doing so (including provisioning new users) until they complete their transition to Microsoft Teams.
¹⁵ Includes Microsoft 365 E5 Compliance, which provides automatic classification and retention, Customer Key, Advanced Message Encryption, Insider Risk Management, Communication Compliance, Information Barriers, Customer Lockbox, Privileged Access Management, Advanced Audit, Records Management, and Advanced eDiscovery capabilities; and Microsoft 365 E5 Security, which includes Microsoft Defender for Office 365 Plan 2, Microsoft Defender for Endpoint, Azure Active Directory Plan 2, Microsoft Defender for Identity, Microsoft Cloud App Security, and Safe Documents.
¹⁶ Microsoft 365 F1 does not include rights to an Exchange mailbox. To enable a full Teams experience, M365 F1 licenses may come with the Exchange Online K1 service plan enabled. Although the Exchange Online K1 service plan will provision a mailbox for the user, M365 F1 users are not entitled to use the mailbox. We recommend that your customers disable Outlook on the web via these steps and ask users not to access the Exchange mailbox via any other methods.
¹⁷ Includes SharePoint Online Kiosk. Cannot be administrators. No site mailbox. No personal site.
¹⁸ Microsoft 365 F1 users can read files using Office for the web, but do not have create/edit/save rights.

Basic client limitations

The following features are available in the full client, but are not available in the basic client:

• Manage team call settings
• Manage delegates
• Make calls on behalf of another contact (manager/delegate scenario)
• Handle another's calls if configured as a delegate
• Manage a high volume of calls
• Initiate a call to a Response Group
• Call park
• Group call pickup

Changing or mixing plans

As the needs of your organization change, you may need to change your Microsoft 365 plan. You can switch from your current subscription to another subscription:

• In the same service family: For example, you can move from Microsoft 365 Business Basic to Microsoft 365 Business Standard, or from Office 365 E1 to Office 365 E3.
• From a standalone plan: For example, you can move from Exchange Online Plan 1 to Office 365 E1.
• To a different service family: For example, you can move from Microsoft 365 Business Basic to Office 365 E3.
  For information about how to change subscriptions, including how to move from a trial to a paid subscription, see Switch to a different Microsoft 365 plan or subscription.

You can combine Enterprise, Business, and standalone plans (for example, Exchange Online Plan 1) within a single account. However, existing limitations on the number of seats per plan do not change. For example, you can have up to 300 seats per plan on both Microsoft 365 Business Basic and Microsoft 365 Business Standard, but an unlimited number of users on Exchange Online Plan 1.