Foundations of OAuth 2.0 for Secure Distributed Systems

Modern applications rely on interconnected services that must share data securely without exposing sensitive user credentials. Understanding how to delegate access safely is a fundamental skill for anyone building or managing web services. This text-based course guides you from the absolute basics of delegation to the practical application of modern authorization flows, giving you the confidence to design secure access control mechanisms. What you'll learn: - Understand the core roles of OAuth 2.0, including resource owners, clients, authorization servers, and resource servers. - Map authorization workflows for different application architectures, from traditional server-side apps to single-page applications. - Apply modern security practices, such as Proof Key for Code Exchange (PKCE), to safeguard authorization codes. - Differentiate clearly between authentication and authorization, exploring how OpenID Connect builds on top of OAuth. - Analyze token types, including JSON Web Tokens (JWTs), and understand secure token storage and validation strategies. You will begin by learning essential security terminology and foundational concepts before moving into detailed, step-by-step written breakdowns of authorization flows and architectural scenarios. This course is designed for beginner developers, system architects, and IT professionals looking to build a reliable mental model of modern API security. Start reading today to master the essentials of secure distributed delegation.