Which feature in Datadog enables real-time alerting for high error rates?

Monitors in Datadog are specifically designed to track metrics, logs, and traces in real-time, allowing users to set thresholds and conditions that trigger alerts. When high error rates occur, monitors can detect this deviation from expected performance and send notifications to the appropriate teams, enabling them to respond promptly.

This proactive alerting capability is crucial for maintaining the reliability and performance of applications, as it empowers teams to address issues before they result in significant impacts on users or services.

In contrast, dashboards primarily serve as visualization tools for displaying metrics and trends without providing immediate alerting capabilities. Notebooks are useful for collaboration and sharing insights, but they do not focus on real-time monitoring. APM (Application Performance Monitoring) provides deep insights into application performance and health but works in conjunction with monitors to identify performance issues. The monitor feature specifically addresses the need for real-time alerting based on defined criteria, making it the right answer in this context.