What is CloudWatch Alarm?
* A CloudWatch Alarm is a mechanism for triggering actions based on predefined thresholds or conditions.
* Users can create alarms to monitor metrics and trigger notifications, autoscaling actions, or other automated responses when the conditions are met.
* When a metric crosses a specified threshold, the alarm enters a particular state (such as “OK,” “ALARM,” or “INSUFFICIENT_DATA”) and triggers actions like sending notifications, launching Auto Scaling activities, or executing AWS Lambda functions.
