Microsoft has rolled out Office 365 ATP Campaign Views feature in public preview. The feature is designed to provide security teams with an overview of the attack flow behind phishing attacks against their organization. Microsoft also enabled Authenticated Received Chain (ARC) for all for Office 365 hosted mailboxes in October to check authentication results within Office 365 and improve anti-spoofing detection. The new feature is available for customers with Office 365 Advanced Threat Protection Plan 2, Office 365 E5, Microsoft 365 Security, and Microsoft E5 Security.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-office-365-atp-now-helps-analyze-phishing-attacks/