How to use SCIM with SSO: A Developer's Guide

System for Cross-domain Identity Management (SCIM) is an industry standard used to automate user provisioning and de-provisioning in Single Sign-On (SSO) systems. It complements the SSO process by ensuring both parties have a synchronized list of provisioned users and their identity-related details and permissions. SCIM helps enterprises manage vast estates of apps, services, and employees more efficiently. It supports standardized schema for representing users and groups, as well as HTTP requests with JSON payloads to perform CRUD operations on user identity data. Integrating SCIM with existing SSO stacks can be complex due to variations in SCIM implementations across different Identity Providers (IdPs) and the need to process all SCIM events from multiple IdPs without missing any. WorkOS' Directory Sync simplifies this process by providing a single, API-based integration for major IdPs and supporting custom SCIM 2.0 connections.