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Hello Kushi Yadav Thank you for posting your query on Microsoft Q&A platform.
Azure Policy can absolutely be applied across multiple subscriptions from a single management group, and this is actually one of the primary use cases management groups are designed for.
Management groups sit one level above subscriptions in the Azure resource hierarchy and act as a governance scope. When you assign an Azure Policy (or Initiative) at the management group level, the assignment automatically cascades down through inheritance to every child management group, subscription, resource group, and resource under it.
For example, if you assign a policy at a management group called Corp that restricts VM deployments to West US only, that rule is enforced across every subscription placed under Corp — and even the subscription owner cannot override it, which gives you consistent, enterprise-wide governance.
A few important points to keep in mind:
- Definition location matters — If you want a custom policy definition to be assignable across multiple subscriptions, the definition itself must be saved at a management group that contains those subscriptions (not at an individual subscription).
- Single tenant requirement — All subscriptions inside a management group must belong to the same Microsoft Entra (Azure AD) tenant. Cross-tenant policy enforcement isn't supported.
- New subscriptions auto-inherit — Any subscription you later move under the management group automatically picks up all inherited policy assignments — no reassignment needed.
- Exclusions/Exemptions — If you need to exclude a specific subscription or resource from an inherited policy, you can use the
notScopesproperty on the assignment or configure an Azure Policy exemption. - Hierarchy depth — A management group tree supports up to 6 levels deep (excluding the tenant root and subscription level). Microsoft recommends keeping it relatively flat (3–4 levels) for manageability.
Tenant Root Management Group
└── Corp (MG) ← Policy assigned here: "Allow VM creation only in West US"
├── Subscription: Finance inherits policy
├── Subscription: HR inherits policy
└── Subscription: IT inherits policy
All three subscriptions (and every resource inside them) will enforce the same rule from a single assignment.
Reference:
- Organize your resources with Azure management groups
- Understand scope in Azure Policy
- Overview of Azure Policy
- Management groups – Cloud Adoption Framework
Hope this clears things up! If it answers your question, please consider marking it as Accepted and upvote so it can help others in the community.
Thanks,
Suchitra.