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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.

AWS CloudFormation: AWS CloudFormation is a service that helps you model and set up your Amazon Web Services resources so that you can spend less time managing those resources and more time focusing on your applications that run in AWS1.

Resource Management: You create a template that describes all the AWS resources that you want (like Amazon EC2 instances or Amazon RDS DB instances), and AWS CloudFormation takes care of provisioning and configuring those resources for you1.

Complex Applications: For complex applications with multiple resources, CloudFormation allows you to manage related resources as a single unit, called a stack1.

Automation: CloudFormation automates the provisioning and updating of your infrastructure in a safe and controlled manner, with rollbacks and staged updates1.

Benefits: By using AWS CloudFormation, Steven can define his infrastructure in code and use this to create and manage his AWS resources, which simplifies the management of complex applications1.

References:

AWS’s official documentation on AWS CloudFormation1.