**To enable this Amazon Web Services account to be able to use CloudWatch Application Signals**

The following ``start-discovery`` example enables this Amazon Web Services account to be able to use CloudWatch Application Signals by creating the *AWSServiceRoleForCloudWatchApplicationSignals* service-linked role. ::

    aws application-signals start-discovery

This command produces no output.

For more information, see `Application Signals <https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Application-Monitoring-Sections.html>`__ in the *Amazon CloudWatch User Guide*.