Topic starter
25/08/2026 6:10 pm
TL;DR: IAM and IGA solve different layers of identity security, with IAM enforcing authentication, authorization, and provisioning while IGA governs whether access remains appropriate through reviews, certifications, and entitlement context, according to Linx Security. The gap between them is where orphaned accounts, excess access, and unmanaged non-human identities accumulate, and continuous feedback between the two is now a programme requirement, not a nice-to-have.
Editorial analysis by NHI Mgmt Group, based on content published by Linx Security: “IGA vs. IAM: Understanding the Different Roles in Modern Identity Security”.
Key questions
Q: What happens when IAM and IGA are not linked?
A: Access can be granted correctly and still drift into an inappropriate state over time.
Q: Why do disconnected access reviews create governance risk?
A: Because a completed review is not the same as a well-informed decision.
Q: What do teams get wrong about non-human identity governance?
A: They often manage service accounts, tokens, and API keys with the same lifecycle assumptions used for human users.
Practitioner guidance
- Link review outcomes to enforcement changes Make sure access certification results can trigger revocation, role correction, or entitlement removal in the same workflow that granted access in the first place.
- Inventory entitlement context beyond app assignment Capture inherited permissions, privileged roles, ownership, and cross-system relationships so reviewers can see what an identity can actually do.
- Extend governance to non-human identities Assign clear ownership, lifecycle triggers, and review paths for service accounts, API keys, bots, and agentic identities instead of forcing them into human-only processes.
Bottom line: IAM grants and enforces access, but IGA is what keeps that access aligned to current role, risk, and business context.
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25/08/2026 6:11 pm
IAM and IGA are not competing disciplines, but they fail when they are operationalised as separate systems. IAM answers whether access can be granted and enforced. IGA answers whether that access still deserves to exist in the current business and risk context. The operational failure is not lack of tooling, but lack of linkage between the two control layers. Practitioners should judge maturity by whether governance outcomes can change enforcement state without manual rework.
A few things that frame the scale:
- Only 5.7% of organisations have full visibility into their service accounts, according to the Ultimate Guide to NHIs.
- Nearly 60% of IT leaders cite restrictive cost and complexity as a weakness of legacy identity governance, according to the 2025 State of Identity Governance Report.
A question worth separating out:
Q: How should security teams connect certification findings to access enforcement?
A: They should make governance actions executable, not advisory. When a review identifies stale, excessive, or conflicting access, that finding should feed directly into provisioning, deprovisioning, or policy updates. Otherwise the programme collects evidence without changing the access state that created the risk.
👉 Read our full editorial: IAM vs. IGA: why access control and governance must stay linked