Deploying ECS services

With your ECS cluster, ECS task definition, and various supporting resources in place, you can now define an ECS service that will deploy your container application as defined in the ECS task definition to your ECS cluster. 

The following example demonstrates adding an ECS service resource to your CloudFormation template, which has a resource type of AWS::ECS::Service:

...
...
Resources:
ApplicationService:
    Type: AWS::ECS::Service
    DependsOn:
      - ApplicationAutoscaling
      - ApplicationLogGroup
      - ApplicationLoadBalancerHttpListener
    Properties:
      TaskDefinition: !Ref ApplicationTaskDefinition
      Cluster: !Ref ApplicationCluster
      DesiredCount: !Ref ApplicationDesiredCount
      LoadBalancers:
        - ContainerName: todobackend
          ContainerPort: 8000
          TargetGroupArn: !Ref ApplicationServiceTargetGroup
      Role: !Sub arn:aws:iam::${AWS::AccountId}:role/aws-service-role/ecs.amazonaws.com/AWSServiceRoleForECS

DeploymentConfiguration...