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In ACI you typically solve this with route control on the L3Out using route-maps / import policies (or contract-based filtering) so the DR tenant only accepts prefixes from the DR Tier-0 path and explicitly denies/filters anything learned via the ISN...
Your setup already sounds solid, and you’re right—scaling it across a team is where things get tricky. In most enterprise cases, teams usually move toward a shared execution layer like CI/CD pipelines or serverless functions (Azure Functions, AWS Lam...