With the ever-increasing risk of cybercrimes, Microsoft Defender for Office 365 provides IT administrators with built-in threat investigation and response capabilities.
You can gain complete insight with the threat explorer, conduct attack simulation training and configure automated investigation and response based on your findings.
All these features help increase Office 365 security and empower you to proactively make the right decisions to protect your organization: https://www.nakivo.com/blog/microsoft-365-threat-investigation-and-response