This workflow send report of all the EC2 instances which are idle from the past 7 days and are launched before 7 days. Instance is identified as idle if its CPU Utilization is less than 2% and Network In/Out is less than 5MB. You can also give other configurations for this workflow.
Sends a report of Elastic Search domains if the total number of instances reach the threshold limit(10). Monitoring and configuring limits for the maximum number of Elasticsearch (ES) instances provisioned within your AWS account will help you to manage better your Elasticsearch compute resources.
Make sure the number of ElastiCache cluster cache nodes provisioned in your AWS account has not reached the limit set by your organization. Monitoring and setting limits will assist you to handle your resources better and avoid unforeseen costs in your AWS bill.