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An item that watches a single metric over a specified time period, and triggers an Amazon SNS topic or an Auto Scaling policy if the value of the metric crosses a threshold value over a predetermined number of time periods.
- Browse Related Terms: alarm, Breach, Canonical Name Record (CNAME), function, Period, Query, Representational State Transfer (REST), REST-Query, statistic, string-to-sign, time stamp, visibility timeout
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