Amazon CloudWatch now supports warm-up periods for alarms to delay evaluation after creation, reducing noise from missing data during resource startup.

<div><p>Amazon CloudWatch now supports warm-up periods for metric and log alarms, delaying alarm evaluation after creation to reduce noise from missing data during resource startup.</p><ul><li>Configure warm-up periods from 1 to 2,880 minutes when creating or updating alarms</li><li>Prevents unnecessary notifications while new resources or services are starting up</li><li>Alarms can end warm-up early when enough metric data fills the evaluation window</li><li>Option to require alarms to wait the full configured duration before evaluating</li><li>Available in all AWS Regions at no additional charge</li></ul><p>Warm-up periods help teams avoid false alarms and unnecessary on-call notifications during CI/CD deployments and service startups.</p></div>


Amazon CloudWatch now supports warm-up periods for alarms

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