# DeploymentControllerType

The deployment controller type to use for the service.

- Source: [`aws-ecs/lib/base/base-service.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-ecs/lib/base/base-service.ts#L2167)

## Example

```ts
declare const myApplication: codedeploy.EcsApplication;
declare const cluster: ecs.Cluster;
declare const taskDefinition: ecs.FargateTaskDefinition;
declare const blueTargetGroup: elbv2.ITargetGroup;
declare const greenTargetGroup: elbv2.ITargetGroup;
declare const listener: elbv2.IApplicationListener;

const service = new ecs.FargateService(this, 'Service', {
  cluster,
  taskDefinition,
  deploymentController: {
    type: ecs.DeploymentControllerType.CODE_DEPLOY,
  },
});

new codedeploy.EcsDeploymentGroup(this, 'BlueGreenDG', {
  service,
  blueGreenDeploymentConfig: {
    blueTargetGroup,
    greenTargetGroup,
    listener,
  },
  deploymentConfig: codedeploy.EcsDeploymentConfig.CANARY_10PERCENT_5MINUTES,
});
```

## Members

| Member | Description |
| --- | --- |
| `ECS` | The rolling update (ECS) deployment type involves replacing the current running version of the container with the latest version. |
| `CODE_DEPLOY` | The blue/green (CODE_DEPLOY) deployment type uses the blue/green deployment model powered by AWS CodeDeploy. |
| `EXTERNAL` | The external (EXTERNAL) deployment type enables you to use any third-party deployment controller. |

## Referenced by

- [`DeploymentController`](/v2/docs/aws-cdk-lib.aws_ecs.DeploymentController).type