NEW - You can now accelerate your migration and modernization with AWS Transform. Read [Getting Started](https://docs.aws.amazon.com/transform/latest/userguide/getting-started.html) in the *AWS Transform User Guide*.

# Registering event rules
<a name="eventbridge-event-rule"></a>

You create CloudWatch Events event rules that capture events coming from your Application Migration Service resources. 

**Note**  
When you use the AWS Management Console to create an event rule, the console automatically adds the IAM permissions necessary to grant Amazon CloudWatch Events permissions to call your desired target type. If you are creating an event rule using the AWS CLI, you must grant permissions explicitly. For more information, see [Events and Event Patterns](https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/CloudWatchEventsandEventPatterns.html) in the Amazon CloudWatch User Guide.

To create your CloudWatch Events rules:



1. Open the CloudWatch console at [https://console.aws.amazon.com/cloudwatch/](https://console.aws.amazon.com/cloudwatch/).

1. On the navigation pane, choose **Events, Create rule**.

1. For **Event source**, select **Event Pattern** as the event source, and then select **Build custom event pattern**.

1. Paste one following event pattern into the text area, depending on the event rule you wish to create:

   1. To catch all MGN events:

      ```
      {
        "source": ["aws.mgn"]
      }
      ```

   1. To catch all Lifecycle state changes:

      ```
      {
        "detail-type": ["MGN Source Server Lifecycle State Change"],
        "source": ["aws.mgn"]
      }
      ```

   1. To catch all events relating to a given source server:

      ```
      {
        "source": ["aws.mgn"],
        "resources": [
          "arn:aws:mgn:us-west-2:111122223333:source-server/s-12345678901234567"
        ]
      }
      ```

1. For **Targets**, choose **Add target**. For **Target type**, choose your desired target.

1. Choose **Configure details.**

1. For **Rule definition**, type a name and description for your rule and choose **Create rule**.