OAuth 2.0 with practical flows, implementations, real-world use cases, and decision-making for robust API architectures

What you'll learn

Learn OAuth 2.0 Token Types and Formats: Explore access tokens, refresh tokens, JWT, and opaque tokens to secure modern APIs.

Understand Token Validation Methods: Discover when to use local validation or introspection for efficient and secure token verification.

Choose the Right OAuth Client Type: Learn when to use public or confidential clients.

Define and Structure OAuth Scopes: Learn to name and structure OAuth scopes for effective, granular API access control.

Gain Basics of OIDC: Understand how OpenID Connect extends OAuth for user authentication and single sign-on.

Master User-Initiated Flows: Learn Implicit, Authorization Code, and PKCE flows for secure user authentication.

Explore Flow Challenges: Analyze vulnerabilities with real-world hacker scenarios and address them effectively.

Choose the Best Flow: Use decision trees to identify the ideal OAuth flow for your project needs.

Discover Advanced Flow Mechanisms: Learn JWT Secured Authorization Request (JAR), JWE, and Pushed Authorization Request (PAR) to enhance OAuth 2.0 security.

Implement Machine-to-Machine Flows: Learn the Client Credentials Flow for secure backend service communication.

Understand ROPC and Device Code Flows: Discover flows like Resource Owner Password Credentials and Device Code for resource owner and devices with limited input

Master Advanced Advanced Client Authentication Methods: Use JWT, SAML assertions, and X.509 mTLS for robust API security.

Learn mTLS X.509 Basics: Build foundational knowledge of mutual TLS, X.509 certificates, and Public Key Infrastructure (PKI).

Secure OAuth 2.0 Access Tokens: Protect your tokens with advanced FAPI-compliant mechanisms like mutual TLS and Demonstration of Proof-of-Possession (DPoP).

Integrate External Identity Providers: Connect with partners, JWT providers, and external systems for scalable identity solutions.

Connect with Legacy and SAML Systems: Integrate with legacy infrastructures and SAML for phased migrations.

Simulate Real-World Scenarios: Analyze attacker scenarios and explore diverse project architectures.

Make Informed Decisions: Use decision trees to select the best OAuth flows and mechanisms for secure architectures.

Requirements

A general understanding of HTTP concepts, such as methods (GET, POST), headers, and status codes.

This course is designed for both beginners and advanced learners, so no prior knowledge of OAuth 2.0 is required.

Description

Master OAuth 2.0: A Practical Guide to API Security is your one-stop resource for designing, implementing, and managing secure API infrastructures. Whether you're a seasoned developer or just starting out, this course offers a comprehensive, hands-on approach to understanding OAuth 2.0, OpenID Connect, token-based authentication, and more. Throughout the lessons, you'll explore access tokens, refresh tokens, JWTs, SAML, and other cutting-edge security protocols to effectively secure your modern applications and services.You'll learn when and how to apply local token validation versus token introspection, how to choose between public and confidential clients, and how to define scalable OAuth scopes that fit your project's exact requirements. With in-depth coverage of user-initiated flows—such as the Authorization Code Flow, Proof Key for Code Exchange (PKCE), and Implicit Flow—you'll gain a firm grasp on configuring these flows in real-world scenarios. We'll also tackle advanced topics like mutual TLS (mTLS), advanced client authentication methods (including JWT and SAML assertions), FAPI-compliant token security mechanisms such as Demonstration of Proof of Possession (DPoP), and even PKI (Public Key Infrastructure) basics to support secure certificate-based solutions.For machine-to-machine communication, you'll master the Client Credentials Flow and learn how to integrate external identity providers or legacy systems without compromising performance or security.You'll walk through hands-on cURL simulations, attacker scenarios, and decision trees that make it easy to map OAuth best practices to your specific project environment. By understanding each chapter's detailed agenda and applying core concepts step by step, you'll build robust API security strategies that scale—whether you're migrating a legacy system or launching a new zero-trust architecture.Don't let confusion about flows, configurations, or integrations hold you back. Enroll now and take the guesswork out of OAuth 2.0!

Overview

Section 1: Course Introduction: Mastering OAuth 2.0 from Basics to Advanced

Lecture 1 Course Agenda and Structure

Lecture 2 Recommendations for Maximizing Your Learning Experience

Section 2: OAuth 2.0 Basics

Lecture 3 Introduction and Agenda for OAuth 2.0 Basics

Lecture 4 Why OAuth 2.0 is Essential: A Practical Story

Lecture 5 Understanding OAuth 2.0 Standard Flow Through a Real-World Scenario

Lecture 6 Understanding OAuth 2.0 Roles

Lecture 7 OAuth 2.0 Demo: Real-Life Application with Photopea and OneDrive

Lecture 8 Understanding OAuth 2.0 Client Types: Public vs. Confidential Clients

Lecture 9 OAuth 2.0 Scopes: Controlling API Access and Permissions (Part 1)

Lecture 10 OAuth 2.0 Scopes: Structuring and Naming for API Usability (Part 2)

Lecture 11 OAuth 2.0 Scopes: Deriving Effective Scope Strategies (Part 3)

Lecture 12 Understanding OAuth 2.0: Access Token vs. Refresh Token

Lecture 13 OAuth 2.0 Token Formats Explained: Opaque vs. JWT (Part 1)

Lecture 14 OAuth 2.0 Token Formats Recap: Opaque vs. JWT (Part 2)

Lecture 15 OAuth 2.0 Token Validation: Real-Time Introspection Explained (Part 1)

Lecture 16 OAuth 2.0 Token Validation: JWT Local Token Verification (Part 2)

Lecture 17 OAuth 2.0 Token Validation: Choosing the Best Approach (Part 3)

Lecture 18 Introduction to OpenID Connect (OIDC) and OAuth 2.0 Comparison

Lecture 19 OIDC in Action: Practical Flow and User Authentication

Lecture 20 Real-World Use Case Demo: OIDC Authentication with Photopea

Section 3: OAuth 2.0 User-Initiated Flows: Secure Authorization for Web and Mobile Apps

Lecture 21 Agenda: OAuth 2.0 User-Initiated Flows Overview

Lecture 22 Understanding the OAuth 2.0 Implicit Flow: A Step-by-Step Guide

Lecture 23 OAuth 2.0 Implicit Flow: Hacker Scenario and Security Challenges

Lecture 24 Understanding the OAuth 2.0 Authorization Code Flow: A Step-by-Step Guide

Lecture 25 OAuth 2.0 Authorization Code Flow: Hacker Scenarios and Security Challenges

Lecture 26 Understanding the OAuth 2.0 PKCE Flow: A Step-by-Step Guide

Lecture 27 OAuth 2.0 PKCE Flow: Hacker Scenarios and Security Enhancements

Lecture 28 Recap of OAuth 2.0 User-Initiated Flows and Decision Tree

Section 4: Advanced Security for User-Initiated OAuth 2.0 Flows

Lecture 29 Agenda: Advanced Security Extensions for OAuth 2.0 User-Initiated Flows

Lecture 30 OAuth 2.0 User-Initiated Flows: Hacker Scenario and Authorization Request Risks

Lecture 31 Understanding the JWT Secured Authorization Request (JAR) in OAuth 2.0

Lecture 32 The Limitation of JAR: Hacker Scenario and Security Challenges

Lecture 33 Asymmetric Encryption Explained: Ensuring Confidentiality in OAuth 2.0

Lecture 34 Enhancing OAuth 2.0 Security with JWE: Confidentiality in Authorization Requests

Lecture 35 OAuth 2.0 Pushed Authorization Requests (PAR): Simplified and Secure

Lecture 36 Combining OAuth 2.0 Security Extensions: PAR, JAR, and JWE

Lecture 37 OAuth 2.0 Security Extensions: Recap, Use Cases, and Decision Tree

Section 5: Understanding OAuth 2.0 ROPC Flow: Risks and When to Use It

Lecture 38 Exploring the OAuth 2.0 ROPC Flow: Use Cases and Risks

Section 6: OAuth 2.0 Machine-to-Machine (M2M): Mastering the Client Credentials Flow

Lecture 39 Mastering the OAuth 2.0 Client Credentials Flow: Use Cases and Decision Tree

Section 7: Mastering OAuth 2.0 Device Code Flow for Limited-Input Devices

Lecture 40 Understanding the OAuth 2.0 Device Code Flow: A Step-by-Step Guide

Section 8: Integrating External Identity Providers with OAuth 2.0 Using JWT and SAML

Lecture 41 Introduction to OAuth 2.0 Assertion Flows: JWT and SAML

Lecture 42 Exploring the OAuth 2.0 JWT Bearer Assertion Flow

Lecture 43 Understanding the OAuth 2.0 SAML Bearer Assertion Flow

Lecture 44 OAuth 2.0 Assertion Flows: Use Cases for JWT and SAML Integration

Section 9: OAuth 2.0 Advanced Client Authentication Methods

Lecture 45 Introduction to OAuth 2.0 Advanced Client Authentication Methods

Lecture 46 Client Authentication in OAuth 2.0 Using Client Secret

Lecture 47 Client Authentication in OAuth 2.0 Using JWT Bearer Assertion

Lecture 48 Client Authentication in OAuth 2.0 Using SAML Bearer Assertion

Lecture 49 OAuth 2.0 Client Authentication with mTLS and X.509 Basics (Part 1)

Lecture 50 OAuth 2.0 Client Authentication Using mTLS and X.509 (Part 2)

Lecture 51 Choosing the Right OAuth 2.0 Client Authentication Method: Recap and Use Cases

Section 10: OAuth 2.0 Advanced Token Security Mechanisms: X.509 mTLS and DPoP

Lecture 52 Introduction to Advanced OAuth 2.0 Token Security: X.509 mTLS and DPoP

Lecture 53 OAuth 2.0 Access Token Binding with X.509 mTLS (Mutual TLS)

Lecture 54 OAuth 2.0 Access Token Binding with DPoP (Proof-of-Possession)

Software Engineers and Developers: Whether you're a backend, frontend, or full-stack developer, this course will equip you with practical skills to implement OAuth 2.0 in your projects.,Solution Architects and Tech Leads: Learn how to design and integrate secure application architectures using OAuth 2.0 for diverse project scenarios and requirements.,Security Professionals: Understand advanced client authentication methods and access token security mechanisms to enhance API protection and align with zero-trust principles.,IT Professionals Migrating Legacy Systems: Discover how to use OAuth 2.0 for phased migrations and integrating legacy systems with modern security protocols.,Beginners in API Security: If you're new to OAuth 2.0 or API security, this course will provide a comprehensive, step-by-step introduction to core concepts and practical implementation.,Anyone Working with External Identity Providers: Gain insights into integrating systems like SAML and JWT providers, especially in compliance-driven or partner-integrated environments.,This course is ideal for anyone involved in designing, implementing, or managing secure application architectures and API security strategies. Whether you're a beginner or an experienced professional, this course will help you confidently apply OAuth 2.0 to real-world scenarios.