OAuth2 and OpenID Connect: The Protocols Behind Modern Auth
OAuth2 is the authorization framework that powers secure API access across virtually every major platform — from Google and GitHub to enterprise identity providers. OpenID Connect builds on top of it to add a standardized identity layer, giving applications a reliable way to verify who a user is. Together, these two protocols form the backbone of modern authentication and authorization. This track takes you from the fundamentals of access delegation to the security hardening and real-world integration patterns that engineers apply in production systems.
What You Will Learn
You will start with the distinction between authentication and authorization, then build up a thorough understanding of OAuth2's core grant types — authorization code, client credentials, implicit, and device flow. From there you will implement OpenID Connect flows, validate and manage ID tokens, and work through advanced OAuth2 extensions. Later courses cover threat modeling for OAuth2 implementations, OIDC discovery and dynamic client registration, and the security patterns that separate robust production integrations from vulnerable ones. The track closes with real-world integration scenarios and a forward-looking look at emerging standards.
The Learning Path
Twelve courses span A1 through C2. The free introductory course establishes the vocabulary of authentication and authorization before the track moves into OAuth2 fundamentals at A2. The middle section (B1–B2) covers grant types, OpenID Connect basics, advanced flows, and ID token validation across four tightly scoped courses. The final block (C1–C2) contains the most demanding material: Securing OAuth2 Implementations, Advanced OIDC Features & Discovery, OAuth2 & OIDC Best Practices and Security, Real-World Scenarios and Integrations, and Future Trends and Advanced Concepts.
How It Works
Each course is split into short, focused lessons you complete in the built-in code editor with real-time feedback. An AI tutor is available whenever you get stuck, so you can work through token flows, client configurations, and security edge cases at your own pace without losing momentum.
