Compare them by the identity populations they control, the lifecycle states they can change, and the evidence they produce. A platform that handles approvals well may still be weak at privileged session control, while a PAM tool may not cover workforce recertification or third-party access. The right choice depends on whether your priority is governance breadth, privilege depth, or both.
Why This Matters for Security Teams
IGA and PAM are often discussed as competing platforms, but IAM teams usually need to compare them by control plane, not brand category. IGA governs who should have access, when access is reviewed, and what evidence exists for audit and attestations. PAM governs how privileged access is issued, used, observed, and revoked. Those are related problems, but they are not interchangeable.
The practical risk is mismatch. A strong IGA programme can still leave privileged sessions unmonitored, while a strong PAM deployment can leave workforce recertification, joiner-mover-leaver workflows, and third-party governance undercovered. NIST’s NIST Cybersecurity Framework 2.0 is useful here because it frames identity as a governance and protection function, not a single tool choice. NHIMG research shows the scale of the issue: in the Ultimate Guide to NHIs — The NHI Market, 97% of NHIs carry excessive privileges, which is exactly the kind of condition that makes narrow tool comparisons misleading.
In practice, many security teams discover the gap only after a privileged account is overexposed or an audit asks for evidence the chosen platform cannot produce.
How It Works in Practice
The most useful comparison starts with three questions: what identities are in scope, what lifecycle states the platform can change, and what evidence it can generate. IGA platforms are strongest where governance is the primary need: access requests, approvals, certifications, entitlement reviews, separation of duties, and role modelling. PAM platforms are strongest where elevation and session risk matter: vaulting secrets, brokering privileged access, rotating credentials, recording sessions, and sometimes injecting just-in-time access.
In programme terms, IAM teams should map use cases rather than feature lists. For example:
- Workforce access reviews, access certifications, and role mining usually belong in IGA.
- Administrative login, session recording, command control, and checkout of shared privileged credentials usually belong in PAM.
- Service accounts, API keys, and other NHI secrets may touch both, but only if the platform can manage the identity lifecycle and the credential lifecycle together.
This distinction matters because evidence differs. IGA typically produces audit trails for approval and certification outcomes. PAM typically produces evidence for privileged usage, session activity, and credential rotation. Teams should verify whether the platform can export logs, support SoD rules, and integrate with SIEM and ticketing systems. The 2024 Non-Human Identity Security Report notes that 88.5% of organisations say their non-human IAM practices lag human IAM, which helps explain why many programmes split governance and privilege controls too late. Current guidance suggests evaluating both tools against the same identity populations, then deciding whether one platform can truly cover both control layers or whether a paired architecture is safer.
These controls tend to break down in hybrid environments with large numbers of service accounts and third-party integrations because ownership, authority, and revocation paths are rarely documented cleanly.
Common Variations and Edge Cases
Tighter privilege control often increases operational overhead, requiring organisations to balance stronger session oversight against developer speed, admin efficiency, and support burden.
There is no universal standard for this yet, especially for NHIs and agentic workloads. Some PAM vendors now add approval workflows, while some IGA tools add privileged governance features, but feature overlap does not guarantee control depth. A platform may approve access well and still be weak at session monitoring, command restriction, or emergency revocation. Conversely, a PAM tool may be excellent for vaulting and checkout but poor at workforce certifications, third-party onboarding, or enterprise role governance.
The main edge case is machine identity. If the programme includes service accounts, API keys, certificates, or AI agents, then neither IGA nor PAM should be evaluated in isolation. Secrets handling, rotation, and workload identity controls may need to sit alongside both. NHIMG’s BeyondTrust API key breach is a reminder that privilege tooling can still fail when the protected secrets and trust boundaries are broader than the platform assumptions. Best practice is evolving toward a layered model: IGA for governance breadth, PAM for privilege depth, and separate controls for high-churn machine identities where static approval models do not fit.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC | Identity access control is the core comparison point for IGA and PAM. |
| OWASP Non-Human Identity Top 10 | NHI-01 | NHI scope matters because many IGA and PAM gaps appear in machine identities. |
| NIST AI RMF | AI RMF helps when comparing platforms for autonomous or machine-driven access. |
Assess governance, map accountability, and test whether runtime access decisions are auditable.
Related resources from NHI Mgmt Group
- Why do cloud license platforms matter to IAM teams?
- How should security teams compare Microsoft 365 admin tools with broader identity governance platforms?
- How do IAM and compliance teams decide whether to buy point tools or broader governance platforms?
- How should IAM teams evaluate identity platforms beyond feature lists?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
