System for Cross-domain Identity Management (SCIM) is a protocol designed to simplify identity management across multiple systems. However, since it's not strictly implemented and individual providers may interpret and implement it differently, building an in-house SCIM solution can lead to fragmentation issues, security risks, and delayed time to market. WorkOS offers a unified and secure SCIM provisioning solution that automatically handles each provider's intricacies and quirks, allowing developers to integrate with every major identity provider on the market quickly and easily.