CloudWatch

This AWS service keeps track of your AWS resource's usage and sends you notifications based on the Alarm configuration defined. Resources such as AWS billing, Route 53, ELB, and so on can be tracked. The following screenshot shows one of the alarms triggered:

Initially, we have to set up the CloudWatch alarm at https://console.aws.amazon.com/cloudwatch/home?region=us-east-1#alarm:alarmFilter=ANY.

You should see the following screen, where you need to click on the Create Alarm button to create your own alarm based on some metrics:

Now, click on the Create Alarm button. You will get a pop-up wizard asking about the metrics that need ...

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