Post Syndicated from Sharanya Ramakrishnan original https://aws.amazon.com/blogs/security/announcing-new-aws-iam-identity-center-apis-to-manage-users-and-groups-at-scale/

If you use AWS IAM Identity Center (successor to AWS Single Sign-On) as your identity source, you create and manage your users and groups manually in the IAM Identity Center console. However, you may prefer to automate this process to save time, spend less administrative effort, and to scale effectively as your organization grows. If you use IAM Identity Center with a supported identity provider (IdP) or Microsoft Active Directory (AD), you may want to check if the right users and groups have synced into IAM Identity Center. You can do this manually, but now you can use the new APIs to make the process easier by setting up automated checks that query this information from IAM Identity Center and notify you only when you need to intervene.

This post explains how you can use IAM Identity Center APIs to automate managing users and groups in a scalable manner and gain better visibility into users and groups in the Identity Center directory. These automations can help you save time and reduce administrative effort. We will provide some background on how IAM Identity Center works and how you can use the new APIs to help simplify your workflows.

Background

IAM Identity Center allows you to centrally manage access to all of your AWS accounts within AWS Organizations or your applications. Using IAM Identity Center is the AWS recommendation for managing the workforce identities of the human users in your organization who access AWS resources. It provides you with the flexibility to create and manage users and groups in the Identity Center directory, or bring in your users and groups from a different identity source such as Active Directory or an external identity provider (IdP). After IAM Identity Center is configured, you can look up users or groups to grant them single sign-on access to AWS accounts, applications, or both. By signing-in once in the IAM Identity Center portal, your users can access their assigned AWS accounts, as well as Identity Center enabled applications such as Amazon SageMaker Studio or Amazon EMR Studio, as well as cloud applications such as Jira, Salesforce, and Tableau.

While IAM Identity Center simplifies user access, you may prefer to manage these users and groups at scale, and audit their access regularly to meet your security requirements. You may also want to automate the process of giving users access to AWS and the resources they need to do their job. Previously, you could only manage identities in the Identity Center directory manually by using the IAM Identity Center console. Now, you can use the new Identity Center APIs to build automation that manages the Identity Center directory users and groups for you.

With these Identity Center APIs, you can build automated workflows to do the following tasks:

• Provision and de-provision users and groups.
• Add new members to a group or remove them from a group.
• Query information about users and groups in the Identity Center directory.
• Update information about users and groups.
• Find out which users are members of which groups.

You can create automated workflows using the APIs to define who has access to AWS accounts or applications through IAM Identity Center, and provide them with the right resources to do their job. Automating workflows can save you time and can reduce your administrative effort. With the new APIs, you can auto-generate reports about users and their IAM Identity Center access configurations. These automated reports can provide you with greater visibility to evaluate your security posture.

Provision, manage, and de-provision users and groups in IAM Identity Center

As your enterprise grows, you may want to automate your administrative tasks to reduce manual effort, save time, and scale efficiently. If you’re a cloud administrator or IT administrator who manages which employees in your organization need access to AWS as part of their job role, or what AWS resources they need so they can develop applications, now you can set up automated workflows that manage this for you.

Consider the following scenario. Your organization uses the Identity Center directory as the source for user information, and a new data scientist joins your company. You want them to be granted access to log in to AWS automatically based on their job role. After they log in, you want them to have access to the AWS resources and applications that you have approved for their job role, including Amazon SageMaker, AWS Managed Grafana, and multiple S3 buckets. Previously, you had to use the AWS Management Console to manually create a new user object and then add the new data scientist to the AWS_Data_Science group. With the new APIs, you can set up an automated workflow that creates a new user and adds the user to relevant groups in the Identity Center directory, as soon as the new data scientist is added to your human resources (HR) system.

A sample AWS Identity Store operations python script called identitystore_operations.py is available in the iam-identitycenter-identitystoreapi-operations GitHub repository. This sample program shows you how you can automate Identity Store operations to create a new user, add the user to a group, list group memberships, and update the user’s group memberships operations. This sample program requires the AWS SDK for Python (Boto3). For instructions to install the AWS SDK for Python, see the Boto3 Quickstart.

The following is an example to see all supported operations available in the sample script.

python identitystore_operations.py —h

The following is example output:

usage: identitystore_operations.py [-h]
{create_user,create_group,adduser_to_group,delete_group,list_members,list_membership}
...
positional arguments:
{create_user,create_group,adduser_to_group,delete_group,list_members,list_membership}

options:
-h, --help show this help message and exit

Next is an example of how you can create the new user John Doe in the Identity Center directory and add the user to an existing AWS_Data_Science group.

python identitystore_operations.py create_user --identitystoreid d-123456a7890 --username johndoe --givenname John --familyname Doe --groupname AWS_Data_Science

The following is example output:

User:johndoe with UserId:12345678-9012-3456-789a-bcdef021345a created successfully
User:johndoe added to Group:AWS_Data_Science successfully

To continue with this example, consider a scenario where the data scientist transitions to a role as an applied scientist, and needs access to additional AWS applications and resources. Rather than using the IAM Identity Center console to manually update the user’s information and add them to the AWS_Applied_Scientists group, you can now use automation to update the user and provide them with the access they need.

The following is an example of how the previously-created user johndoe can be added to the AWS_Applied_Scientists group.

python identitystore_operations.py adduser_to_group --identitystoreid d-123456a7890 --groupname AWS_Applied_Scientists --username johndoe

The following is example output:

User:johndoe added to Group:AWS_Applied_Scientists successfully

Finally for this scenario, consider that this employee leaves your company. Rather than using the IAM Identity Center console to manually delete their user object, now your automation can delete the user as soon as they are removed from your HR system.

Evaluate your security posture in IAM Identity Center

To maintain visibility across AWS, it is a best practice to regularly audit and evaluate the security controls for any service that you use. It’s also a best practice to identify the AWS accounts or applications that an employee can access. Having access to this information helps you maintain and improve your company’s security posture. As a cloud administrator, you may need to submit periodic reports to auditors enumerating the employees who have access to AWS. If you or your IT team manage users and groups in a different source system, you also need to track whether the right users and groups are synced into AWS.

The following is an example of how you can find the members of the AWS_Applied_Scientists group.

python identitystore_operations.py list_members --identitystoreid d-123456a7890 --groupname AWS_Applied_Scientists

The following is example output:

UserName:johndoe,Display Name: John Doe

For example, consider a scenario in which you use Active Directory as your identity source. You want to confirm that the right set of users and groups have been synced into the Identity Center directory. After the users and groups are confirmed, you are required to submit this list of users and groups with access to AWS to auditors every quarter. Rather than manually verifying which employees have access to AWS and manually creating a list for the auditors, now you can use the new APIs to create a workflow that automatically queries the users and groups in the Identity Center directory, compares it to your list of intended Active Directory users and groups who should have AWS access, and provides you the information about whether there are any users or groups who have access that was not intended. Additionally, you can set up a script to generate reports every quarter for the auditors.

The following is an example of how you can find the group memberships of the specific user johndoe.

python identitystore_operations.py list_membership --identitystoreid d-123456a7890 --username johndoe

The following is example output:

User :johndoe is a member of the following groups
AWS_Data_Science
AWS_Applied_Scientists

Conclusion

In this post, you learned how to use IAM Identity Center APIs to automate managing users and groups in a scalable manner and gain better visibility into users and groups in the Identity Center directory.

The IAM Identity Center APIs for user and group management expand the capabilities of existing Identity Store APIs, helping you build scalable workflows. They help your IT and cloud teams save time and reduce administrative effort through automation.

To learn more about using IAM Identity Center or the user and group management APIs, see the AWS IAM Identity Center User Guide or the Identity Store API Reference Guide.

If you have feedback about this post, submit comments in the Comments section below. If you have questions about this post, start a new thread on AWS IAM Identity Center re:Post or contact AWS Support.

Want more AWS Security news? Follow us on Twitter.