Which of the following is NOT a feature of Datadog's APM tool?

Datadog's APM (Application Performance Monitoring) tool is designed to provide deep insights into application performance and user experience. Among its features, distributed tracing allows users to follow individual requests as they move through various services in a microservices architecture, helping to identify performance bottlenecks. Real User Monitoring (RUM) is another feature that captures the actual experiences of users on web applications, providing valuable insights into their interactions and satisfaction. Error reporting is crucial in APM, as it helps teams understand and trace the root causes of errors and performance issues within their applications.

Database management, however, is not a feature offered by Datadog's APM tool. While database performance metrics may be monitored and reported, the primary focus of database management involves maintaining the database's performance, security, and availability, which extends beyond the scope of application performance monitoring. Therefore, database management does not belong in the same category as the other features specifically under the APM tool, making it the correct answer to the question.