OIDC vs SAML for Enterprise SSO: A 2026 Decision Guide

In 2026, both OpenID Connect (OIDC) and Security Assertion Markup Language (SAML) are viable protocols for enterprise single sign-on (SSO), with the choice influenced by application type, customer identity provider (IdP) preferences, compliance needs, and total cost of ownership. While OIDC is preferred for new projects, especially for modern web, mobile, and API applications due to its compact JSON tokens and discovery features, SAML remains essential for legacy systems and sectors like government and education owing to its entrenched XML-based federation model. Enterprises often opt for providers supporting both protocols to streamline integration and minimize strategic risk, focusing on factors like pricing models, provisioning capabilities, and security posture rather than solely on protocol security. With the global SSO market poised for significant growth, considerations around operational costs, compliance requirements, and vendor lock-in are crucial in selecting an SSO solution, emphasizing a balance between protocol choice and broader identity management strategies.

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