This is an article which was published on the 4SysOps site. Here, I explain the technicalities of Defender for Office 365, previously known as Advanced Threat Protection.
You may read the article here.
Microsoft 365 Advanced Threat Protection (ATP) is an important layer of protection for email. It works as a sort of safety layer for those harmful elements that manage to trickle through the Exchange Online Protection (EOP) layer. Hence, a proper understanding of the various options of O365 ATP is crucial.