
Amazon CloudWatch Metrics Insights alarms enable dynamic monitoring of entire fleets of resources with single SQL-based alarms that automatically adjust as resources are added or removed, reducing operational overhead and eliminating dangling alarms.


<div><p>This article explains how to use Amazon CloudWatch Metrics Insights alarms to monitor dynamic AWS resources efficiently and reduce operational overhead.</p><ul><li>Metrics Insights alarms automatically adapt to resources that come and go dynamically</li><li>Single alarm definition monitors entire fleets without manual metric math updates</li><li>Use case 1: Detect DynamoDB read throttling across all tables automatically</li><li>Use case 2: Alert on HTTP 5XX errors from any ECS cluster in account</li><li>CloudFormation template deploys ready-to-use alarms and SNS notifications</li><li>Eliminates dangling alarms on obsolete resources and blind spots on new resources</li><li>Reduces costs by consolidating multiple metric math expressions into one alarm</li></ul><p>CloudWatch Metrics Insights alarms provide a scalable, low-maintenance solution for monitoring fast-changing environments without manual alarm management.</p></div>


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