The default rule is a final rollout rule for any users that don’t match any of the previous sections on the Targeting tab, like individual targeting or custom rules.
As with other rules, you can choose to serve a specific variation, or apply a percentage rollout to any remaining users.
For simple percentage rollouts, you can just use the default rule for a feature flag. For example, to roll out the
true variation to 50% of your users, set the default rollout rule to
true 50% and