Microsoft 365 E3 is a complete Office 365 enterprise security and productivity solution. It includes all the features of Office 365 E1, such as Exchange Online, SharePoint Online, and Skype for Business, along with advanced security, compliance, and device management. Also include Windows 10 Enterprise and Advanced Threat Protection for Exchange Online. It also provides access to Azure Active Directory and Intune management tools for user and device management. With Microsoft 365 E3, businesses can protect their data and keep users productive everywhere.