evaluationCriteria

The evaluation criteria for the alarm. For each PutMetricAlarm operation, you must specify either MetricName, a Metrics array, or an EvaluationCriteria.

If you use the EvaluationCriteria parameter, you cannot include the Namespace, MetricName, Dimensions, Period, Unit, Statistic, ExtendedStatistic, Metrics, Threshold, ComparisonOperator, ThresholdMetricId, EvaluationPeriods, or DatapointsToAlarm parameters of PutMetricAlarm in the same operation. Instead, all evaluation parameters are defined within this structure.

For an example of how to use this parameter, see the PromQL alarm example on this page.