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How do you implement role-based authorization?

Junior ASP.NET Web API
Quick Answer Role-based authorization: add roles as claims in the JWT or use ASP.NET Core Identity roles. [Authorize(Roles = "Admin,Manager")] restricts to users with those roles. Multiple roles in one attribute = OR logic. Stack multiple [Authorize] attributes for AND logic. Check roles in code: User.IsInRole("Admin"). Roles are a simple but coarse-grained authorization mechanism.

Answer

Use role-based authorization with:

[Authorize(Roles="Admin,Manager")]

Roles are validated from claims inside the JWT or identity provider.

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