What is the difference between SAML and OIDC?

Both enable single sign-on. SAML is an older XML-based standard common in enterprise SSO, while OIDC is a modern JSON and REST standard built on OAuth, favored for new web and mobile apps.

Yes. SAML remains widely deployed for enterprise and B2B SSO, so most identity platforms support both SAML and OIDC.

Which should I choose for a new application?

OIDC is generally preferred for new web and mobile apps, but you should support SAML if you must integrate with enterprise identity providers that require it.

SAML vs OIDC: Which Federation Protocol Should You Use?

By SWI Community Team · Updated 2026-06-12 · 7 min

SAML and OpenID Connect (OIDC) both enable single sign-on, but they come from different eras and fit different jobs. Choosing well saves you years of integration pain.

SAML 2.0

SAML is an XML-based standard from 2005, deeply entrenched in enterprise web SSO. If you sell to enterprises, you will be asked for SAML, because that is what their identity providers speak. It is mature and universally supported, but XML and its signing rules are heavy and error-prone.

OpenID Connect (OIDC)

OIDC is a modern identity layer built on top of OAuth 2.0, using JSON and JWTs. It is the better fit for mobile apps, single-page apps, and APIs, with simpler tokens and a cleaner developer experience.

How to choose

Building consumer or developer-facing apps, mobile, or APIs: prefer OIDC.
Integrating with enterprise customers or legacy IdPs: you will likely need SAML too.
Most CIAM and IAM platforms support both, so the real question is which your counterparties require.

Where to start

See our SSO implementation guide and federation providers. For the OAuth relationship, read OAuth vs OIDC.

Frequently asked questions

What is the difference between SAML and OIDC?: Both enable single sign-on. SAML is an older XML-based standard common in enterprise SSO, while OIDC is a modern JSON and REST standard built on OAuth, favored for new web and mobile apps.
Is SAML still used?: Yes. SAML remains widely deployed for enterprise and B2B SSO, so most identity platforms support both SAML and OIDC.
Which should I choose for a new application?: OIDC is generally preferred for new web and mobile apps, but you should support SAML if you must integrate with enterprise identity providers that require it.