LEARN. PRACTICE. GROW.Concept and mechanism
An Azure RBAC assignment combines a principal, a role definition, and a scope. The principal may represent a person, group, or application. Scope determines covered resources and inheritance to lower levels. Assignments are additive: Reader on a resource group does not reduce Contributor inherited from the subscription. To remove access, identify all relevant grants, including group membership. Distinguish Azure resource administration from Microsoft Entra directory administration. A resource role does not automatically grant user management, just as a directory role does not automatically represent access to every VM.
Guided application
For an access request, first list required operations and target resources. Use groups for stable responsibilities while retaining ownership and membership review. For workloads, managed identities avoid storing an application password, but still need destination authorization and code obtaining tokens through a supported mechanism. Choose identity lifecycle according to the workload and verify connectivity separately. After a change, test an allowed operation and an operation that should remain denied. Record the grant’s source to simplify future review and removal.
An operator changes responsibilities. Adding Reader does not remove Contributor received through an old group; review that membership and access still needed.
Common pitfalls
Reviewing only direct assignments; confusing identity with authorization; broadening scope to solve an error without diagnosis.
Related topics: Governance, protection, and costs · Storage, delegation, and recovery
Effective access results from applicable grants, not merely the last assigned role.
Reference: Azure RBAC overview · AZ-104; skills measured 2026-04-17