# Testing your VPC endpoint
<a name="vpc-endpoints-testing"></a>

After you create your VPC endpoint, you can test the connection by making API calls to AWS IoT Managed integrations from an EC2 instance in your VPC.

## Prerequisites
<a name="vpc-endpoints-testing-prerequisites"></a>
+ An EC2 instance in a private subnet within your VPC
+ Appropriate IAM permissions for AWS IoT Managed integrations operations
+ Security group rules that allow HTTPS traffic (port 443) to the VPC endpoint

## Testing the connection
<a name="vpc-endpoints-testing-connection"></a>

1. Connect to your Amazon EC2 instance in the private subnet.

1. Verify DNS resolution for the private DNS name:

   ```
   dig api.iotmanagedintegrations.region.api.aws
   ```

1. Test HTTPS connectivity:

   ```
   curl -v https://api.iotmanagedintegrations.region.api.aws
   ```

1. Make an AWS IoT Managed integrations API call:

   ```
   aws iot-managed-integrations list-destinations \
     --region region \
     --endpoint-url https://api.iotmanagedintegrations.region.api.aws
   ```

Replace `region` with your AWS Region (for example, `ca-central-1`).