Which initial configuration step is necessary to enable threat investigation using data from the unified audit log in Microsoft Defender for Cloud Apps?

To enable threat investigation using data from the unified audit log in Microsoft Defender for Cloud Apps, incorporating the Office 365 connector is essential. This connector allows Microsoft Defender for Cloud Apps to access and analyze data from various Office 365 services. By integrating this connector, it facilitates the extraction of crucial audit logs that provide insight into user activities, file access, and other important information across Office 365 applications.

These logs play a vital role in identifying unusual patterns or potential threats within the organization, thereby enhancing security visibility and enabling proactive threat investigation. If this initial step is not completed, the necessary data for comprehensive investigations into security incidents may be missing, limiting the effectiveness of threat detection and response efforts.

In contrast, the other options may play roles in the broader context of security and compliance but are not specifically focused on enabling access to the necessary audit logs for effective threat investigation in the context of Microsoft Defender for Cloud Apps. The Azure connector, for instance, integrates Azure resources but does not specifically address Office 365 data. Similarly, user enrichment settings and automatic log upload settings serve different purposes and do not directly tie into accessing unified audit logs for threat analysis.