Stop an experiment
Important
End of support notice: On October 16, 2025, Amazon will discontinue support for CloudWatch Evidently. After October 16, 2025, you will no longer be able to access the Evidently console or Evidently resources.
If you stop an ongoing experiment, you will not be able to resume it or restart it. The portion of traffic that was previously used in the experiment will be served the default variation.
When an experiment is not manually stopped and passes its end date, the traffic does not change. The portion of traffic allocated to the experiment still goes to the experiment. To stop this, and cause the experiment traffic to instead be served the default variation, mark the experiment as complete.
When you stop an experiment, you can choose to cancel it or mark it as complete. If you cancel, it will be shown as Cancelled in the list of experiments. If you choose to mark it as complete, it is shown as Completed.
To permanently stop an experiment
Open the CloudWatch console at https://console.amazonaws.cn/cloudwatch/
. In the navigation pane, choose Application Signals, Evidently.
Choose the name of the project that contains the experiment.
Choose the Experiments tab.
Choose the button to the left of the name of the experiment.
Choose Actions, Cancel experiment or Actions, Mark as complete.