OAuth 2.0 Security: Implement Authorization with Keycloak, Go, and React

Integrating secure authorization into modern web applications can feel overwhelming with complex specifications and security risks. Understanding the fundamentals of OAuth 2.0 is essential for any developer looking to protect user data and secure APIs. This text-only course guides you through the foundational concepts of the OAuth 2.0 framework, helping you transition from theoretical specifications to practical implementation. You will explore how authorization servers, client applications, and resource servers interact using clear, step-by-step written explanations and code examples. What you'll learn: Understand the core OAuth 2.0 roles, grant types, and architectural flows from the ground up; Configure Keycloak as an identity and authorization provider for your application ecosystem; Implement secure backend endpoints using Golang to validate access tokens; Build frontend authentication flows in React using secure storage and modern patterns like PKCE; Integrate third-party authentication by exploring GitHub's OAuth system; Apply modern security best practices to protect your apps from common authorization vulnerabilities. We begin with foundational OAuth 2.0 terminology, RFC specifications, and security concepts before moving into structured, step-by-step implementation chapters. You will read detailed code walk-throughs in Go and React, learning how to configure Keycloak and manage tokens safely in real-world scenarios. This course is designed for software developers, backend engineers, and security enthusiasts who are new to OAuth 2.0 and want a solid, practical understanding of authorization. Basic familiarity with programming concepts is helpful, but no prior security experience is required. Start reading today to demystify OAuth 2.0 and secure your applications with confidence.