TL;DR: AWS IAM Identity Center helps centralize temporary access and permission sets, but the article argues that least privilege at scale still depends on governance, PAM, CIEM, and continuous review across the rest of the estate, according to Securden. The real issue is not whether AWS can issue short-lived access, but whether organisations can shrink permissions fast enough across human, privileged, and workload identities.
Editorial analysis by NHI Mgmt Group, based on content published by Securden: “Using AWS IAM Identity Center to Manage Least Privilege”.
By the numbers:
- Securden reports 80% faster secure access policy deployment when its controls are used with IAM Identity Center.
- Securden reports a 60% lower total cost of ownership than fragmented legacy deployments.
Key questions
Q: What breaks when least privilege is managed only in IAM?
A: IAM can grant access, but it does not continuously prove whether the access is still needed or safe in context.
Q: Why do temporary AWS permission sets not eliminate excess privilege risk?
A: Temporary permission sets reduce standing access, but risk remains when other identities retain broader rights or when permissions are never narrowed after real usage becomes clear.
Q: How do security teams know whether least privilege is actually working?
A: Least privilege is working when identities have narrowly scoped permissions, unused credentials are removed or quarantined, and repeated access reviews consistently shrink entitlements.
Practitioner guidance
- Map least privilege across all identity types Treat IAM Identity Center as one segment of the programme and inventory where privileged accounts, service accounts, and vendor access remain outside it.
- Use CIEM to find excess entitlements Compare effective permissions with observed usage across AWS and connected environments so dormant rights, unused policies, and over-scoped roles are visible before they become the default.
- Apply PAM to non-AWS privileged access Require just-in-time elevation, session recording, and approval for server accounts, database accounts, and endpoint admin access that never passes through IAM Identity Center.
Bottom line: AWS IAM Identity Center improves access centralisation, but it does not close the least-privilege gap across the rest of the identity estate.
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Least privilege at scale breaks when teams stop at the AWS control plane: IAM Identity Center can centralise temporary access, but it does not govern the privileged accounts, service accounts, and vendor credentials that sit outside it. The article’s core value is showing that identity governance must span the full estate, not just the cloud login path. Practitioners should treat AWS centralisation as a layer, not the programme.
A few things that frame the scale:
- 42% of machine identities have privileged access and 61% of organisations lack identity security controls for cloud workloads, according to CyberArk's 2025 Identity Security Landscape.
A question worth separating out:
Q: Should organisations use CIEM as a replacement for IAM or PAM?
A: No. IAM grants and authenticates access, PAM governs high-risk privilege, and CIEM measures whether cloud permissions have drifted beyond what identities actually use. CIEM is best treated as the visibility and right-sizing layer that makes IAM and PAM decisions more accurate in cloud environments.
👉 Read our full editorial: AWS least privilege at scale needs IAM Identity Center governance