authentication

JWT Bearer authentication in .NET 10 APIs is configured by wiring token validation middleware to validate stateless access tokens and protect endpoints. This approach establishes secure-by-default API access control.

Policy-based authorization in ASP.NET provides fine-grained access control beyond simple role checks by evaluating custom claim requirements. Use it when your application needs enforce complex permission logic on protected routes.

Yes, OpenID Connect integrates with ASP.NET Identity to support external identity providers and single sign-on. This configuration manages robust user authentication flows alongside local password hashing and recovery.

Yes, the guidance covers token generation and secure secret handling best practices for microservices. It ensures stateless token validation and claim handling are consistently applied across distributed APIs.

The best way to implement fine-grained access control in .NET web apps is using policy-based authorization with ASP.NET Identity. This consolidates claim handling, role policies, and endpoint protection into a coherent pattern.

Your .NET API needs both authentication and authorization configuration to separately verify user identity and enforce access permissions. Combining JWT Bearer with policy-based authorization ensures endpoints are secure-by-default.