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Application Auto Scaling now provides scaling activity updates via Amazon EventBridge

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[Application Auto Scaling](https://docs.aws.amazon.com/autoscaling/application/userguide/what-is-application-auto-scaling.html) now publishes to [Amazon EventBridge](https://docs.aws.amazon.com/eventbridge/latest/userguide/what-is-amazon-eventbridge.html) when a scaling policy scales your resource to the configured maximum. You may have set a maximum bound for cost control, this event notification gives you the visibility to check in and ensure that operating at maximum bound does not pose an availability risk for your application. This notification is available for all resource types that are supported for automatic scaling by Application Auto Scaling, including Amazon EC2 Spot Fleet requests, ECS services, DynamoDB tables and global secondary indexes, Aurora replicas, EMR clusters, Sagemaker endpoint variants, AppStream 2.0 fleets, Comprehend document classification endpoints, and AWS Lambda functions with provisioned concurrency. EventBridge delivers a near real-time stream of system events that describe changes in AWS resources. Using simple rules that you can quickly set up, you can match events and route them to one or more target functions or streams, including AWS Lambda for event processing with custom business logic, Amazon Simple Notification Service for automated notifications, or CloudWatch Logs for event logging. To learn more about Application Auto Scaling Events, visit [this](https://docs.aws.amazon.com/autoscaling/application/userguide/monitoring-overview.html) technical documentation.