OAuth 2.0 Course for Beginners

Master OAuth 2.0 authorization implementation through hands-on development of a complete three-server system including authorization server, resource server, and client application. Begin with fundamental concepts by understanding OAuth 2.0 through the valet key analogy and explore the four essential roles: Resource Owner, Client, Authorization Server, and Resource Server. Discover why PKCE (Proof Key for Code Exchange) is crucial for modern OAuth implementations and security best practices. Build a fully functional authorization server from scratch, implementing code imports and initial setup configurations. Develop a resource server API that securely handles protected resources and integrates with the authorization flow. Create a client application using the Authorization Code flow enhanced with PKCE for maximum security. Learn to run and coordinate all three servers simultaneously to create a complete OAuth ecosystem. Troubleshoot common implementation issues including JWKS errors and Axios 400 errors through practical debugging sessions. Gain comprehensive understanding of OAuth roles, security considerations, and industry best practices for production deployments. Access complete source code through the provided GitHub repository to reinforce learning and enable further experimentation with OAuth 2.0 implementations.