Chris Noth is looking to manage user identities and automate the provisioning and de-provisioning of users in cloud-based services and applications. The IAM standard that supports this functionality is SCIM (System for Cross-domain Identity Management).

SCIM Overview: SCIM is an open standard designed to manage user identity information across different domains. It simplifies user management in cloud-based applications and services by allowing for automated user provisioning and de-provisioning1.

Automated Provisioning: With SCIM, when new users are added to an organization’s system, their identities can be automatically provisioned across various cloud services without manual intervention1.

Automated De-provisioning: Similarly, when users leave the organization or their roles change, SCIM can ensure that their access is automatically revoked or adjusted across all connected services. This reduces the risk of former employees retaining access to sensitive systems and data1.

Why Not the Others?:

XACML (eXtensible Access Control Markup Language) is used for defining access control policies, not for identity provisioning.

OpenID is an authentication standard that allows users to be authenticated by certain co-operating sites using a third-party service, without the need for passwords.

OAuth is an open standard for access delegation, commonly used as a way for Internet users to grant websites or applications access to their information on other websites but without giving them the passwords.

References:

MajorKey Tech: What is Provisioning and De-provisioning in IAM1.

SailPoint: What is automated provisioning?2.

Nestmeter: Streamlining Security: User Provisioning and Deprovisioning with IAM3.