AWS Simple Notification Service (SNS) can be used with AWS CloudFormation to receive notifications about the state of your stack, such as when a resource has been created, deleted, or an update operation has failed. By configuring SNS notifications, you can monitor and respond quickly to any issues that arise.
In AWS Console -
In Terraform -
References:
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack#notification_arns