The company that you are working for has a highly available architecture consisting of an elastic load balancer and several EC2 instances configured with auto-scaling in three Availability Zones. You want to monitor your EC2 instances based on a particular metric, which is not readily available in CloudWatch. What is a custom metric in CloudWatch which you have to manually set up?

Memory Utilization of an EC2 instance

Explanation:

An EC2 instance is a server that is in terms of virtual in the Amazon Elastic Compute Cloud (EC2) to run the applications over the web services. It is a platform that should be cloud computing for permitting the subscribers of the business in order to run the programs related to the applications

Therefore according to the given situation, the custom metric that should be manually set up is utilization of the memory for EC2 instance

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