Strong process discipline helps, but it does not remove the recurring manual work. Someone still has to reconcile inventories, validate reclaim actions, and maintain the integration between tools. A shared data model reduces that ongoing burden and also makes savings easier to prove, which matters when finance reviews renewals.
Why This Matters for Security Teams
Keeping IGA and SaaS management separate can look harmless when process discipline is strong, but the real issue is not discipline alone. It is whether identity data, entitlement changes, and app inventory stay synchronized often enough to support removals, recertification, and renewal decisions. NHI Management Group’s Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs shows that lifecycle control is where many organisations lose visibility, especially once credentials and approvals move across systems.
This is also where manual handoffs become expensive. IGA may know who should have access, while SaaS management may know which apps are still consuming spend, but neither has full context alone. NIST’s Cybersecurity Framework 2.0 emphasises continuous governance and response, which is difficult when entitlement evidence is split between teams and tools. The practical risk is not only security drift, but also wasted renewals and weak audit support.
For non-human identities, the burden is sharper because service accounts, API keys, and app tokens do not follow human HR events. In practice, many security teams encounter missed revocations and duplicate applications only after a review, breach, or renewal failure has already exposed the gap.
How It Works in Practice
The strongest operating model is usually not “merge everything” or “keep everything separate,” but to separate responsibilities while sharing a common data model. IGA should remain the system of record for identity lifecycle decisions, approvals, and attestation. SaaS management should remain the system of record for application spend, usage, and renewal posture. The connection between them should be a shared inventory of identities, apps, owners, and entitlements so both sides are acting on the same facts.
That shared model matters because reclaim decisions depend on both governance and consumption evidence. If SaaS management flags an unused application, IGA still has to validate whether the access is tied to a break-glass process, a service account, or a hidden integration. If IGA removes access without checking licensing impact, finance may miss savings or create a service disruption. This is why the Top 10 NHI Issues research is so relevant: weak visibility and poor lifecycle control are recurring failure points, not edge cases.
- Use one authoritative owner for each app and each entitlement, even if two tools observe them.
- Reconcile applications, accounts, and tokens on a fixed cadence, not just during audits.
- Automate reclaim workflows where confidence is high, but require human review for shared or privileged access.
- Track evidence for removal, not just the request, so finance and audit can verify the outcome.
- Maintain integration health as a control, because stale connectors create false confidence.
Current guidance suggests that strong process discipline can reduce friction, but it does not eliminate the operational need for a shared inventory, especially when NHIs and SaaS subscriptions overlap. These controls tend to break down when multiple business units buy apps independently, because ownership and entitlement data diverge faster than review cycles can catch up.
Common Variations and Edge Cases
Tighter separation often preserves local expertise, but it also increases coordination overhead, requiring organisations to balance cleaner accountability against slower remediation. That tradeoff is most visible in environments with many shadow IT purchases, multiple procurement paths, or delegated admin models. In those settings, a strict “IGA over here, SaaS management over there” posture can leave gaps between entitlement control and spend control.
There is no universal standard for this yet, but best practice is evolving toward shared records and separate workflows. For example, SaaS management may surface dormant apps faster, while IGA may better support access certification and SoD review. The key is not organisational purity, but reliable handoff. If the data model is not aligned, a revoked account can still show up as active in one tool, and an unused app can stay licensed because no one owns the follow-through.
This becomes even more important for non-human identities. API keys, service accounts, and integration tokens often survive employee offboarding and app retirements, which is why NHI Management Group’s NHI Lifecycle Management Guide and Ultimate Guide to NHIs — Regulatory and Audit Perspectives both stress lifecycle evidence and auditability. Organisations should keep the functions distinct only if they can still produce one trusted answer to: who owns it, who can use it, and when was it last removed or reviewed.
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 and CSA MAESTRO address the attack and risk surface, while NIST CSF 2.0, NIST AI RMF and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.OV-01 | Governance oversight applies to shared identity and SaaS control decisions. |
| OWASP Non-Human Identity Top 10 | NHI-01 | Inventory and ownership gaps are central when IGA and SaaS data diverge. |
| CSA MAESTRO | GOV-03 | MAESTRO stresses governance alignment across autonomous and connected services. |
| NIST AI RMF | GOVERN | The GOVERN function supports accountable decision-making across linked systems. |
| NIST Zero Trust (SP 800-207) | SC.AC-04 | Continuous access validation fits shared inventories and least-privilege enforcement. |
Assign clear accountability for shared identity records and enforce evidence-based decisions for removals and renewals.
