Tiered alerts: Urgency-aware alerting

Datadog introduces tiered alerts to enhance the effectiveness of its alerting system. This feature allows users to configure different severity levels for each metric, triggering notifications to specific individuals or teams via various communication channels based on the alert's urgency. Tiered alerts eliminate the need for multiple monitors and help reduce alert fatigue by ensuring that only relevant people are notified about critical issues. To set up a tiered alert, users can define threshold values and wrap their notification message and recipient list in specific tags to indicate the severity level of each alert or warning. This feature is available for all Datadog integrations and custom metrics.