---
title: "Discussion on \"SAML vs OAuth 2.0 vs OIDC: A Practical Deep Dive with Architecture & API Access Flows\" | Hashnode"
description: "Discussion on \"SAML vs OAuth 2.0 vs OIDC: A Practical Deep Dive with Architecture & API Access Flows\". 🧠 Core Concepts\n\n\n\n\nProtocolPurposeTypeFormatToken FormatIdeal Use Case\n\n\n\nSAMLAuthentication onlyFederated AuthenticationXML-basedSAML Assertion (XML)Web SSO\n\nOAuth 2.0Authorization onlyDelegated AuthorizationJSONAccess / Refresh TokensAPI Access\n\n..."
url: "https://hashnode.com/posts/saml-vs-oauth-20-vs-oidc-a-practical-deep-dive-with-architecture-and-api-access-flows/68249e984f8e2606b520fb86"
---

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# [SAML vs OAuth 2.0 vs OIDC: A Practical Deep Dive with Architecture & API Access Flows](https://curiouskernel.hashnode.dev/saml-vs-oauth-20-vs-oidc-a-practical-deep-dive-with-architecture-and-api-access-flows?utm_source=hashnode&utm_medium=feed)

🧠 Core Concepts ProtocolPurposeTypeFormatToken FormatIdeal Use Case SAMLAuthentication onlyFederated AuthenticationXML-basedSAML Assertion (XML)Web SSO OAuth 2.0Authorization onlyDelegated AuthorizationJSONAccess / Refresh TokensAPI Access ...

May 14, 2025 · 4 min read · curiouskernel.hashnode.dev  
Updated May 16, 2025  
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-   [#saml-vs-oidc](https://hashnode.com/tag/saml-vs-oidc)
-   [#hybrid-sso-with-saml-and-oidc](https://hashnode.com/tag/hybrid-sso-with-saml-and-oidc)
-   [#saml-vs-oauth](https://hashnode.com/tag/saml-vs-oauth)

## Written by

[Fayaz Khan](https://hashnode.com/@FayazKhan)

@FayazKhan · Pune- India

  
[View profile](https://hashnode.com/@FayazKhan)

Learning, building and Sharing - one challange at a time

Hi, I’m Fayaz Khan — a PLM Solution Architect with deep hands-on experience in 3DEXPERIENCE, real-world integrations, and enterprise system behavior. I work at the intersection of engineering, security, and systems thinking, navigating between PLM platforms, cloud infrastructure, APIs, and practical business needs. I prefer digging into why something works (or breaks), rather than just how to configure it. My writing is an attempt to document the often-overlooked details — the silent bugs, the edge cases, the security gaps — and sometimes, the mental models that help me make sense of it all.

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