Open the test detail page (test must be Running).
In the Variants list, click the trophy icon next to the variant you want to promote.
A confirmation dialog appears: 'This will end the A/B test and route all traffic to the winning variant. Losing variants will be archived and unpublished. This action cannot be undone.'
Click Declare Winner to confirm.
The test status changes to Completed and the winner is recorded.
A winner banner appears at the top of the detail page with a trophy icon and the text 'Winner: [Variant Name]'.
All losing variants are archived and unpublished. Their submission history remains visible in the dashboard.
If the winner is a non-control variant, its domain configuration is applied to match the original form's domain so existing URLs keep working. An amber warning alert reads: 'Visitors see the A/B test winner form, not the original.' with an Edit winner form link.
A New Test button appears on the completed test page if you want to run the next experiment.
