Office 365 E1 Plus is a cloud-based enterprise service from Microsoft that offers a suite of web-based applications and business services for unlimited users. This product combines the features of DLP, Intune Plan 1 and Entra ID Plan 1 for zero trust security on top of the features of Office 365 E1. 
 
Key Features of Office 365 E1:
Web-Based Microsoft 365 Apps: Access Outlook, Word, Excel, PowerPoint, and OneNote to create, share, and collaborate from wherever you are.
Email and Calendars via Microsoft Exchange: Get secure and reliable business-class email with a 50 GB mailbox per user.
Microsoft 365 for Mobile: Get Microsoft 365 apps on iOS, Android, and Windows devices with screen sizes of 10.9” or less.
OneDrive for Business: Access 1 TB of personal cloud storage from anywhere, on any device.
SharePoint Online Plan 1: Share and manage content, knowledge, and apps with 1 TB of OneDrive storage per user.
Microsoft Stream: Upload, organize, and share intelligent video content companywide.
Microsoft Forms: Easily create surveys, quizzes, and polls.
Power Apps for Microsoft 365: Build the business apps you need and extend or customize the apps you already use.
Power Automate for Microsoft 365: Make repetitive tasks easy with workflow automation.

Key Features of Intune Plan 1:
Microsoft Intune Plan 1 is a cloud-based unified endpoint management solution designed to help organizations manage and secure their devices and applications. It offers cross-platform endpoint management, built-in endpoint security, mobile application management, and endpoint analytics. Intune Plan 1 supports a wide range of devices, including Windows, Mac, iOS, Android, and Linux, making it a versatile solution for managing diverse technology environments. Additionally, it integrates with other Microsoft services like Microsoft Defender for Endpoint and Azure Active Directory, providing a comprehensive security and management solution for both company-owned and bring-your-own devices. 
 
Key Features of Entra ID P1: 
Microsoft Entra ID Plan 1 (formerly known as Azure Active Directory Plan 1) is a cloud-based identity and access management solution designed to help organizations manage user identities and secure access to resources. It offers features such as single sign-on (SSO), multifactor authentication (MFA), conditional access policies, and dynamic group management. Entra ID Plan 1 also includes advanced security capabilities like identity protection and risk-based access control, which help protect against identity compromise. Additionally, it integrates seamlessly with other Microsoft services like Microsoft 365 and Azure, providing a comprehensive and secure identity management solution for both cloud and on-premises environments.
 
Buy Office 365 E1 Plus which includes enterprise-level, web-based apps such as Excel and Outlook, integrated with cloud services such as OneDrive that enable productivity from anywhere and security proucts like DLP, Intune Plan 1 and Entra ID Plan 1. It provides the “core” cloud business functionality addressing the need for security and compliance.