Access Application Auto Scaling using interface VPC endpoints

You can use AWS PrivateLink to create a private connection between your VPC and Application Auto Scaling. You can access Application Auto Scaling as if it were in your VPC, without the use of an internet gateway, NAT device, VPN connection, or AWS Direct Connect connection. Instances in your VPC don't need public IP addresses to access Application Auto Scaling.

You establish this private connection by creating an interface endpoint, powered by AWS PrivateLink. We create an endpoint network interface in each subnet that you enable for the interface endpoint. These are requester-managed network interfaces that serve as the entry point for traffic destined for Application Auto Scaling.

For more information, see Access AWS services through AWS PrivateLink in the AWS PrivateLink Guide.

Create an interface VPC endpoint

Create an endpoint for Application Auto Scaling using the following service name:

com.amazonaws.region.application-autoscaling

For more information, see Access an AWS service using an interface VPC endpoint in the AWS PrivateLink Guide.

You do not need to change any other settings. Application Auto Scaling calls other AWS services using either service endpoints or private interface VPC endpoints, whichever are in use.

Create a VPC endpoint policy

You can attach a policy to your VPC endpoint to control access to the Application Auto Scaling API. The policy specifies:

The following example shows a VPC endpoint policy that denies everyone permission to delete a scaling policy through the endpoint. The example policy also grants everyone permission to perform all other actions.

{
   "Statement": [
        {
            "Action": "*",
            "Effect": "Allow",
            "Resource": "*",
            "Principal": "*"
        },
        {
            "Action": "application-autoscaling:DeleteScalingPolicy",
            "Effect": "Deny",
            "Resource": "*",
            "Principal": "*"
        }
    ]
}

For more information, see VPC endpoint policies in the AWS PrivateLink Guide.