Microsoft Defender Plan 1 plus Trellix Endpoint (formerly McAfee Mvision) and with Microsoft Defender Plan 2

M365 E3 users entitle to MS Defender Plan 1. There are TWO Options to enhance the endpoint security if you would like to leveage Microsoft Defender:

Option 1: MS Defender Plan 1 + Trellix Endpoint

Option 2: Upgrade to MS Defender Plan 2

Reference:

Microsoft Defender for Endpoint Plan 1 Now Included in M365 E3/A3 Licenses

https://techcommunity.microsoft.com/t5/microsoft-defender-for-endpoint/microsoft-defender-for-endpoint-plan-1-now-included-in-m365-e3/ba-p/3060639

 

Trellix Endpoint (formerly McAfee Mvision) enhances protection on your Microsoft Windows 10 and Microsoft Windows Server 2016 (and later) endpoints.

Key features (trellix.com)

Trellix Support Community - Difference between MVISION Endpoint and Endpoint S... - Support Community

Microsoft Defender Plan 1 plus Trellix Endpoint (formerly McAfee Mvision) and with Microsoft Defender Plan 2