SCIM 2.0 User Provisioning for B2B SaaS: Complete Implementation Guide
Blog post from SSOJet
SCIM 2.0, finalized by the IETF in 2015, is a standardized REST protocol designed to automate user provisioning between identity providers and SaaS applications, replacing manual account setups with real-time directory sync. It operates over a small set of REST endpoints, primarily /Users and /Groups, using a standardized JSON schema defined by RFC 7643 and RFC 7644, and it employs OAuth 2.0 bearer tokens for authentication. SCIM facilitates the creation, update, and deactivation of user accounts, addressing issues like the offboarding gap by ensuring accounts are deactivated when users leave a company. Implementing SCIM involves mapping SCIM attributes to an internal user model, handling PATCH requests for updates and deactivation, and ensuring compliance with different identity providers such as Okta and Microsoft Entra ID. While enterprises often require SCIM alongside SAML for lifecycle management, developers can either build their own SCIM servers or use brokers like SSOJet, which normalizes provider-specific quirks, thus simplifying integration for B2B SaaS applications.
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