You can now respond to Amazon EMR cluster state changes with Amazon CloudWatch Events. The new Amazon EMR event types in Amazon CloudWatch Events provide information including state and related severity for Amazon EMR clusters, instance groups, steps, and Auto Scaling policies. Using simple rules that you can quickly set up, you can match events and route them to Amazon SNS topics, AWS Lambda functions, Amazon SQS queues, streams in Amazon Kinesis Streams, or built-in targets. Additionally, you can view events for a cluster on the Cluster Details page in the Amazon EMR console.