Amazon ECS metric data is automatically sent to CloudWatch in 1-minute periods. Amazon ECS service using the Fargate launch type has CloudWatch CPU and memory utilization metrics that can be enabled from the ECS console

Download and install the unified CloudWatch agent on the ECS instances to collect internal system-level metrics and application logs from the instances. The logs collected by the unified CloudWatch agent are processed and stored in Amazon CloudWatch logs and can be queried for report generation

Use the awslogs log driver to send log information to CloudWatch Logs. To turn on the awslogs log driver, your Amazon ECS container instances require at least version 1.9.0 of the container agent