SSO

SSO (Single Sign-On) is an identity authentication mechanism that allows users to access multiple application systems using one set of credentials.

SAML (Security Assertion Markup Language) has long been the de facto standard in the enterprise single sign-on (SSO) space.

WorkOS is a technology company focused on providing enterprise-grade identity authentication and user management infrastructure for SaaS applications, with products covering core enterprise IT capabilities such as SSO (Single Sign-On), SCIM directory synchronization, and audit logs.

SSO lets users log in to multiple applications with one credential, reducing password fatigue and weak-password risk, but it does not itself determine what a user can access.

Common SSO implementation protocols include SAML 2.0, OAuth 2.0, and OpenID Connect (OIDC).

WorkOS was originally positioned to help SaaS products quickly integrate enterprise-grade identity capabilities such as SSO and directory sync.

Single sign-on (SSO) allows teams to centrally manage accounts and permissions through an identity provider (such as Okta or Google Workspace).

For products using WorkOS for enterprise-grade SSO and Directory Sync, this update lowers integration costs and is particularly helpful for meeting compliance requirements such as SOC 2 and ISO 27001.

SSO and SCIM are not substitutes but complementary pillars of identity management.

In an SSO flow, the authentication assertion sent by the IdP to the application is usually carried in the form of a SAML assertion or an OIDC ID Token.

SSO (single sign-on) only addresses the login step and does not automatically create or delete accounts within applications.

SCIM synchronization logs and SSO login records can serve as indirect evidence, but they cannot replace the authoritative data source within the application.

SSO is usually implemented by an identity provider (IdP), such as Okta or Azure AD.

Employee identity usually reuses the enterprise's existing IdP for SSO, whereas customer identity often requires an independent IdP to support external user features such as social login and self-service registration.

At the protocol level, SSO usually relies on standards such as SAML 2.0, OpenID Connect (OIDC), or CAS.

When desktop-level tools are used in enterprise scenarios, upgrades require operating machine by machine, data may land locally, and integration with existing SSO/permission systems is difficult; these are the inherent limitations of the CS architecture.

Typical enterprise procurement compliance requirements include: data residency and cross-border transfer restrictions (such as the EU's GDPR), legal design for obtaining participants' consent before recording, access permissions and role tiers, complete audit logs, data retention and deletion policies, and identity management integrations such as single sign-on (SSO) and SCIM.

In the enterprise software field, an account system usually refers to a whole set of mechanisms based on IAM (Identity and Access Management), covering account creation, identity authentication, organizational structure mapping, role and permission assignment, single sign-on (SSO), and other aspects.

When comparing SSO and SCIM vendors, it is recommended to ask them to provide a complete pricing breakdown and to clarify the definition of the billing unit for a 'connection', whether SCIM is billed separately, the tiered pricing after exceeding the plan, technical support response time, and the contract term and renewal price adjustment mechanism.

SSO solves the authentication problem of 'log in once to access multiple applications', while SCIM solves the provisioning problem of 'when accounts are created, modified, and deleted'; the two are different protocols and are priced differently.