The final installment of a three-part series on monitoring Amazon Elastic Load Balancers (ELB) explores the integration of Datadog for enhanced visualization and alerting of ELB metrics. It highlights the process of setting up AWS CloudWatch integration to access ELB data, allowing users to view comprehensive metrics through Datadog’s customizable dashboards. The article emphasizes the benefits of correlating ELB metrics with those of backend EC2 instances to diagnose performance issues effectively. Additionally, it describes the advantages of using the Datadog Agent for more granular monitoring of EC2 instances by collecting native metrics, which provides a higher-resolution view of system performance. By integrating these tools, users can gain critical insights into their infrastructure's health and performance, enabling improved visibility and cost savings.