For our Cloud users, we’ve added support for viewing cumulative exposure and metric results for experiments enabled in lower environments. Helping users catch issues early and ship experiments with confidence.

This makes it easier to verify that:
Users are being bucketed correctly
Your metrics are logging as expected
To enable this, go to the experiment setup page, select Enable for Environments, run tests in your lower environment, and view real exposure and metric data before launching to production.
For more information on the new lower environment testing features see the docs her.