Amazon CloudWatch now sends alarm state change events to Amazon EventBridge
Amazon EventBridge now integrates with Amazon CloudWatch so that when CloudWatch alarms are triggered, a matching EventBridge rule can execute targets.
Now you can simply create rules in EventBridge that matches specified CloudWatch alarms. Each rule supports multiple targets including AWS Lambda functions, AWS Step Functions state machines, Amazon Simple Queue Service (Amazon SQS) queues, Amazon Kinesis Data Streams, AWS Systems Manager Automation, and more. For example, you can define an alarm that fires when available disk space is running low, which triggers a Lambda function via an EventBridge rule, to clean up the space.
CloudWatch alarm state change events are now available at no extra cost in all public AWS Regions and AWS GovCloud Regions. Learn more about how to create EventBridge rules that call one or more targets using the EventBridge console, CLI and SDK.