Office 365 already has basic security capabilities such as multi-factor authentication (MFA), data loss prevention (DLP), mail filtering, and anti-malware. E5 subscription also has eDiscovery, a stripped-down version of Advanced Threat Protection, auto data classification with Advanced Data Governance, and Office Cloud App Security.

Enterprise Mobility + Security is Microsoft’s mobile and security management platform composed of security solutions related to identity and access management, information protection, threat protection, cloud app security, and mobile security. These security products can be implemented on top of Office 365 and extended to your third-party software investments.

Microsoft 365 combines Office 365, Windows, and selected EMS features in one bundle. Depending on the plan you choose, the security features included in Microsoft 365 can be Advanced Threat Protection, Intune, Advanced Threat Analytics, Identity and Threat Protection, Azure Active Directory, Information Protection, and Azure Advanced Threat Protection.