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Monitoring of runners and alerting feature is introduced in conjunction with Pooling feature.
This module creates the AWS resources required to monitor the runners and send alert to SNS topic
Lambda function is monitoring number of idle runners per environment, per org and puts custom metric value to cloudwatch which is integrated to cloudwatch alarm. When the metric count goes less than set threshold value (25% of pool count) the alert is generated and sent to SNS topic. SNS topic subscribers receive notification.