Because value is spread across multiple control planes that do not naturally share context. If access data, usage data, and lifecycle data live in separate tools, teams cannot easily show whether a licence was used, whether access was excessive, or whether remediation reduced risk. That weakens both financial reporting and governance credibility.
Why This Matters for Security Teams
Fragmented identity systems make IAM ROI hard to prove because the evidence needed to justify spend is split across provisioning, access, logging, and governance tools. When teams cannot connect entitlement data to actual usage and remediation outcomes, it becomes difficult to show whether controls reduced risk or simply added administration. NIST’s Cybersecurity Framework 2.0 treats this as a governance problem as much as a technical one: without shared telemetry, control effectiveness is hard to measure.
This is especially visible in NHI environments, where identities are numerous, ephemeral, and often owned by different platform teams. NHIMG research shows that only 5.7% of organisations have full visibility into their service accounts in the Ultimate Guide to NHIs, which means many programs are trying to prove value with incomplete inventory and weak lifecycle data. In that state, even good IAM changes can look invisible in budget reviews. In practice, many security teams encounter failed ROI debates only after audit findings or breach response forces them to reconcile systems that were never designed to speak to each other.
How It Works in Practice
To prove ROI, IAM programs need a measurable chain from identity control to business outcome. That means linking joiner-mover-leaver events, privilege changes, authentication activity, and revocation actions into one reporting path. The clearest gains usually come from combining identity governance, PAM, and secrets management so that access decisions and downstream usage can be correlated instead of reported separately. NIST guidance supports this kind of measurable control mapping, while NHIMG’s Top 10 NHI Issues highlights how excessive privilege and poor rotation make identity programs expensive to defend.
In practice, security teams often track four questions:
- Was access actually used, or merely provisioned?
- Did the entitlement reduce after the business need ended?
- Did the control prevent excessive privilege or secret sprawl?
- Did remediation shorten exposure time after a risk signal?
That structure turns IAM from a cost centre into a control system with observable outcomes. It also makes cross-functional reporting possible for audit, finance, and risk teams. Current guidance suggests that the strongest ROI cases come from eliminating duplicate entitlements, reducing manual reviews, and lowering incident response cost by tightening lifecycle control. Where fragmented systems remain, the reporting gap becomes the story: one platform shows access granted, another shows usage, and a third shows revocation, but none can prove the full control effect. These controls tend to break down in multi-cloud environments with shared service accounts and third-party ownership because identity events are distributed across tools, tenants, and teams.
Common Variations and Edge Cases
Tighter identity consolidation often increases integration effort, requiring organisations to balance better proof of value against migration cost and data cleanup. That tradeoff is real, especially when legacy directories, cloud IAM, and local application permissions were built at different times.
There is no universal standard for this yet, but best practice is evolving toward shared identity telemetry and common control reporting. In NHI-heavy estates, ROI is often easiest to prove when programs start with the highest-risk identities first, then expand to broader user populations. NHIMG research in the 2024 Non-Human Identity Security Report found that 88.5% of organisations say their non-human IAM practices lag behind or are merely on par with human IAM, which helps explain why fragmented tooling keeps returns hard to quantify. Teams should also be cautious about vendor dashboards that claim end-to-end visibility without showing the underlying data model. A dashboard is not evidence unless it can trace entitlement, use, and revocation across systems.
Edge cases usually appear when organisations outsource parts of identity operations, rely on regional data silos, or treat secrets and access as separate governance domains. In those environments, ROI is still measurable, but only if reporting is designed around control outcomes rather than tool counts.
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 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.OV-01 | ROI proof depends on measurable control outcomes across fragmented identity tools. |
| OWASP Non-Human Identity Top 10 | NHI-01 | Inventory and visibility gaps make it hard to attribute value to NHI IAM controls. |
| CSA MAESTRO | IAM-02 | Agentic and workload identities need unified telemetry to prove access governance value. |
Unify identity telemetry so access decisions and remediation can be measured end to end.
