Foundations of Authentication and Authorization

Every modern application needs to verify who users are and what they are allowed to do, yet confusing identity concepts can lead to critical security flaws. Understanding the core mechanisms of identity management is the first step toward building secure digital systems. This text-based course guides you from absolute beginner to a confident grasp of modern security protocols. You will read clear explanations, analyze security scenarios, and learn how to implement secure access controls without getting lost in complex jargon. What you will learn: 1. Understand the fundamental differences between authentication and authorization. 2. Explore modern identity standards including OAuth 2.0, OpenID Connect, and SAML. 3. Analyze multi-factor authentication and passwordless mechanisms. 4. Apply Zero Trust security principles to access control models. 5. Identify common security vulnerabilities in identity management. The course starts with foundational terminology and core security definitions before guiding you through real-world identity flows, token-based security, and modern industry best practices. This course is designed for beginner developers, IT support professionals, and aspiring security analysts with no prior security experience. Start reading today to build a strong foundation in modern digital security.