This text provides a detailed guide on how to monitor ECS and EKS applications running on AWS Fargate using Datadog. It explains the integration process between AWS services and Datadog, highlighting the use of Datadog's Agent to collect metrics, logs, and trace data for deeper visibility into containerized infrastructures. The article covers setting up necessary integrations for both ECS and EKS, deploying the Datadog Agent as a sidecar container to enable Autodiscovery, and configuring distributed tracing and application performance monitoring (APM). It also discusses the use of Fluent Bit for log collection and FireLens for routing logs to Datadog, illustrating how to filter, aggregate, and visualize log data for troubleshooting. Additionally, the guide emphasizes the importance of tagging for organizing monitoring data and provides instructions for creating custom dashboards and alerts to proactively manage the health of containerized applications on Fargate.