SCIM vs JIT provisioning: when to use each - Part 2

Part 2 of the guide on SCIM and JIT provisioning delves into the technical aspects and challenges of implementing these two provisioning methods, highlighting the differences between them. JIT provisioning primarily involves attribute mapping and relies on stable identifiers, though it faces challenges with role mapping due to variations in identity provider (IdP) configurations. SCIM provisioning, on the other hand, requires setting up a service with a minimal number of routes and is prone to bugs, particularly with PATCH operations that vary by IdP. The document emphasizes the importance of understanding the quirks of different IdPs, such as Okta and Microsoft Entra, especially in terms of deprovisioning methods, timing, and compliance with SCIM standards. The decision between building or buying a SCIM solution is discussed, with many teams preferring managed services to avoid the complexities and maintenance involved in supporting multiple IdPs. Additionally, the guide explains how JIT and SCIM can coexist within the same application, typically by using a stable shared identifier and often disabling JIT when SCIM becomes the primary source for managing the user lifecycle.

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