In this course, you will learn how to secure ASP.NET Core Web APIs using two powerful authentication approaches: Custom Authentication Scheme and JSON Web Tokens (JWT). We start by building a complete custom authentication system from scratch, including user registration, login, and protecting API endpoints. You will understand how authentication flows work internally and how to control access using a custom scheme.
Next, we move into JWT-based authentication, one of the most widely used standards for securing modern APIs. You will learn how JWT tokens are created, structured, signed, and validated. Step by step, you will implement a full JWT authentication system, including configuration setup, token service creation, dependency injection, and securing endpoints with authorization policies. By the end of this course, you will have hands-on experience building secure, production-ready Web APIs using both custom authentication and JWT.
