AWS Step Functions adds support for Open Workflow Metrics

[AWS Step Functions](https://aws.amazon.com/step-functions/) announces open workflow metrics for Step Functions workflows in [Amazon CloudWatch](https://aws.amazon.com/cloudwatch/) to track and monitor the number of open workflow executions in real-time through Amazon CloudWatch. AWS Step Functions is a visual workflow service capable of orchestrating over 12,000+ API actions from over 220 AWS services to build distributed applications and data processing workloads. Now, with open workflow metrics, you have account-level visibility into the number of standard workflows in progress as well as your open workflow limit. You can manage workloads across all workflows, regardless of how they're started, to ensure smooth workflow operations. You can set CloudWatch alarms to monitor your workflows and proactively receive alerts as you approach your limits. Once alerted, you can effectively manage your workflows by taking actions such as stopping specific workflows or requesting a limit increase. Open workflow metrics is available to use in CloudWatch for standard workflows with no additional configuration required. To learn more, please see the AWS Step Functions [Developer Guide](https://docs.aws.amazon.com/step-functions/latest/dg/procedure-cw-metrics.html#cloudwatch-step-functions-execution-metrics) to get started.