OAuth 2.0 Final Summary : OAuth Flows, Use Cases, Comparison & Best Practices

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In this video, we provide a complete overview of OAuth 2.0, covering all OAuth flows, their real-world use cases, comparisons, and industry best practices.

This video is part of an OAuth deep-dive series, and in this particular episode, we focus on understanding OAuth from the ground up—why it exists, how it works, and when to use each OAuth flow correctly.

🔐 What You’ll Learn in This Video:

What is OAuth 2.0 and why it is used
OAuth 2.0 architecture and core concepts
Overview of all major OAuth flows:
Authorization Code Flow
Authorization Code Flow with PKCE
Client Credentials Flow
Implicit Flow (and why it’s deprecated)

Resource Owner Password Credentials Flow

Comparison of OAuth flows (when to use which flow)

Best practices for implementing OAuth securely

Common OAuth mistakes and how to avoid them

💡 Who Is This Video For?

Software Developers

Backend & Frontend Engineers

API Developers

Security Enthusiasts

Anyone preparing for system design interviews or OAuth-related interviews

Understanding OAuth correctly is critical for building secure applications, APIs, and authentication systems. This video will help you choose the right OAuth flow based on your application type—web apps, mobile apps, SPAs, machine-to-machine communication, and more.

📌 Watch till the end to understand OAuth best practices that are often missed in real-world implementations.

👍 If you find this video helpful, like, share, and subscribe for more deep-dive videos on authentication, authorization, and system design.