AWS – AWS CloudFormation event notifications with Amazon EventBridge help you create event-driven applications

Changes to AWS CloudFormation-based stacks and resources are now available as event notifications in Amazon EventBridge. Customers can use these event notifications to build and scale loosely-coupled event-driven applications. With this feature, customers can trigger actions in real-time after they create, update, or delete either their CloudFormation stacks or resources in their CloudFormation stacks without having to write single-use custom code or develop new software.

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