Single Sign-On (SSO) is a crucial feature for modern SaaS applications and Enterprise software, allowing users to sign in once and access multiple applications without having to sign in again. OpenID Connect (OIDC) is an identity layer on top of OAuth 2.0 that allows clients to verify the identity of end-users based on authentication performed by an authorization server and obtain basic profile information. However, OIDC lacks a standardized way to manage user identities and their attributes across different applications, which can lead to manual management or implementing custom solutions. This is where SCIM (System for Cross-domain Identity Management) comes in, providing a standard protocol for automating the exchange of user identity information between identity domains, improving the user experience and security of SSO implementations. By using SCIM alongside OIDC, companies can automate the onboarding and offboarding of employees, manage user permissions across different applications, and provide a seamless and secure SSO experience for their users.