Vercel has shipped Deployment Policies, a feature that lets teams control exactly which mechanisms, organizations, and repositories are permitted to trigger deployments.
Policies are scoped per environment and configurable at both the team and project level, meaning you can enforce different rules for production versus preview without a blanket setting that breaks your workflow.
The full documentation covers the specific rule combinations and how they interact across environment tiers, which is where the practical implementation detail lives.
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