+| Office 365 Business Premium, E3, or E5 | Azure Multi-Factor Authentication can be [enabled on a per-user basis](howto-mfa-userstates.md), or enabled or disabled for all users, for all sign-in events, using security defaults. Management of Azure Multi-Factor Authentication is through the Office 365 portal. For an improved user experience, upgrade to Azure AD Premium P1 or P2 and use Conditional Access. For more information, see [secure Office 365 resources with multi-factor authentication](https://support.office.com/article/Set-up-multi-factor-authentication-for-Office-365-users-8f0454b2-f51a-4d9c-bcde-2c48e41621c6). |
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