This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::ECS::Service ServiceConnectTlsCertificateAuthority
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority"></a>

The certificate root authority that secures your service.

## Syntax
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority-syntax.json"></a>

```
{
  "[AwsPcaAuthorityArn](#cfn-ecs-service-serviceconnecttlscertificateauthority-awspcaauthorityarn)" : {{String}}
}
```

### YAML
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority-syntax.yaml"></a>

```
  [AwsPcaAuthorityArn](#cfn-ecs-service-serviceconnecttlscertificateauthority-awspcaauthorityarn): {{String}}
```

## Properties
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority-properties"></a>

`AwsPcaAuthorityArn`  <a name="cfn-ecs-service-serviceconnecttlscertificateauthority-awspcaauthorityarn"></a>
The ARN of the Amazon Private Certificate Authority certificate.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## See also
<a name="aws-properties-ecs-service-serviceconnecttlscertificateauthority--seealso"></a>
+  [Associate an Application Load Balancer with a service](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/aws-resource-ecs-service.html#aws-resource-ecs-service--examples--Associate_an_Application_Load_Balancer_with_a_service)