By adding your Network Load Balancer (NLB) to a monitor, you can gain improved visibility into your application’s internet performance and availability using Amazon CloudWatch Internet Monitor. You can now create or associate a monitor for an NLB directly when you create an NLB in the AWS Management console. You can create a monitor for the load balancer, or add the load balancer to an existing monitor, directly from the Integrations tab on the console.
With a monitor, you can get detailed metrics about your application’s internet traffic that goes through a load balancer, with the ability to drill down into specific locations and internet service providers (ISPs). You also get health event alerts for internet issues that affect your application customers, and can review specific recommendations for improving the internet performance and availability for your application. After you create a monitor, you can customize it at any time by visiting the Internet Monitor console in Amazon CloudWatch.
To learn more about how you can use and customize a monitor, see the Internet Monitor user guide documentation.
Source:: Amazon AWS