AWS Details Managing IAM Identity Center Identity Source Transitions
AWS has published architectural guidance and a step-by-step runbook for managing identity source transitions within IAM Identity Center. The guide, which includes sample code and focuses on Active Directory to Okta migrations, helps organizations safely switch identity providers or consolidate infrastructure. It details how transitions impact user and application assignments, noting destructive changes when moving from Active Directory to external IdPs. The post targets AWS administrators, identity engineers, and project teams, providing a migration tool script on GitHub for assistance.
- →Update internal SOPs and onboarding guides to reflect the new Okta-based login process
Enhancements (1) ›
- Update internal SOPs and onboarding guides to reflect the new Okta-based login process
Maintenance (2) ›
Test the complete end-to-end sign-in flow for a test user. Authenticate through Okta, access the AWS portal, and assume a role in a test account. Phase 3: Complete the cutover You’re ready to configure Okta, switch the IAM Identity Center identity source, and complete the production cutover. Important: Downtime begins from the moment you confirm the identity source change in Step 3.2, AD users, groups, and all account and application assignments are immediately deleted. Users will not be able to access IAM Identity Center until Phase 4 (assignment restoration) is complete. 3.1 – Configure the
Test role switching within the console to validate permission boundaries. 5.2 – Spot-check multiple user types: Validate access for a representative sample of users across different access levels, including Administrator, Developer, Read-Only or Audit, and any other standard roles defined in your environment. Confirm that permission sets are correctly mapped and that no unintended access has been granted or denied. Additionally, use the following script to compare the pre-migration CSV file against the current live state to detect missing or extra assignments. If drift is found, the script wri
https://aws.amazon.com/blogs/security/managing-identity-source-transition-for-aws-iam-identity-center/
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