createExtensionAssociation
When you create an extension or configure an Amazon Web Services authored extension, you associate the extension with an AppConfig application, environment, or configuration profile. For example, you can choose to run the AppConfig deployment events to Amazon SNS
Amazon Web Services authored extension and receive notifications on an Amazon SNS topic anytime a configuration deployment is started for a specific application. Defining which extension to associate with an AppConfig resource is called an extension association. An extension association is a specified relationship between an extension and an AppConfig resource, such as an application or a configuration profile. For more information about extensions and associations, see Working with AppConfig extensions in the AppConfig User Guide.