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You can now use Vercel Flags to roll out a feature to a growing percentage of users on a schedule, with progressive rollouts.
Unlike weighted splits, which hold a fixed distribution (for example, 50/50) for experiments, a progressive rollout follows a predefined schedule that gradually shifts the traffic percentage to the new variant. Each stage has a target percentage and a duration.
Exposing a change in stages lets you catch a regression on a small slice of users before it hits everyone.
Progressive rollouts are now available in the dashboard and through the new vercel flags rollout CLI command.
Learn more in the Vercel Flags documentation.