Guide Explains RBAC, Policy-Based and Attribute-Based Authorization in ASP.NET Core

A technical guide published on DEV Community outlines the key authorization models used in modern web applications, including Role-Based Access Control (RBAC), claims-based authorization, and Attribute-Based Access Control (ABAC). RBAC assigns users to roles and grants permissions at the role level, making administration simpler but limiting flexibility for context-dependent access decisions. When role checks alone are insufficient, policy-based authorization in ASP.NET Core allows developers to encode arbitrary logic, such as restricting edits to a post's original author. The guide also covers resource-based authorization, custom authorization handlers, multi-tenant scenarios, and externalized policy engines. It is part of a broader series on authentication and authorization, building on earlier coverage of JWT validation and OpenID Connect.