OAuth 2.0 is a framework for delegated authorization that allows an application to access resources on behalf of a user or client without sharing the user’s password directly. It matters because modern applications need safer ways to delegate access across systems and services.
What is OAuth 2.0?
OAuth 2.0 defines flows, tokens, scopes, and roles that help authorize client access to APIs and protected resources. It is widely used for SaaS integrations, mobile apps, single sign-on ecosystems, and delegated API access patterns.
What OAuth 2.0 Commonly Supports
Common uses include third-party app access, API delegation, token-based authorization, service integrations, and modern identity ecosystems.
OAuth 2.0 vs. Direct Password Sharing
Direct password sharing gives another app the user’s secret. OAuth 2.0 lets access be delegated through tokens and approved scopes instead.
Frequently Asked Questions
Why is OAuth 2.0 important?
Because it enables many common modern integration and delegated access patterns without exposing passwords directly.
Is OAuth 2.0 the same as authentication?
Not exactly. It is primarily an authorization framework, though it is often used alongside authentication systems.
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