A governance check that compares actual application use against cost, ownership, and business value before continuation. It is stronger than simple spend analysis because it can justify reduction, consolidation, or retirement of software that is still technically active.
Expanded Definition
Usage review is a governance control that tests whether software, service accounts, APIs, or agent-enabled tools are still worth keeping by comparing actual use against business value, ownership, and cost. In NHI operations, it is not just a finance exercise. It can expose dormant integrations, duplicated tooling, and privileged capabilities that no longer support a current workload.
Definitions vary across vendors when usage review is folded into software asset management, access review, or vendor rationalisation. For NHI and Agentic AI environments, the stronger interpretation is operational: evidence of real activity should justify continuation, and weak evidence should trigger scrutiny. That makes it closer to NIST Cybersecurity Framework 2.0 governance and asset visibility than a simple procurement audit.
Usage review also matters because many non-human identities remain technically valid long after their business purpose fades. When owners cannot explain what a credential, token, or integration still supports, the identity has become governance debt. The most common misapplication is treating usage review as a budget spreadsheet exercise, which occurs when teams ignore actual execution logs, ownership drift, and downstream privilege exposure.
Examples and Use Cases
Implementing usage review rigorously often introduces friction for teams that want to preserve convenience, requiring organisations to weigh continuity against removing underused or redundant access paths.
- A finance team flags a SaaS subscription as low value, and a usage review shows the associated API key still powers a dormant report export job that should be retired before cancellation.
- A platform team compares service account logs with ownership records and finds a legacy integration still authenticating weekly, even though the original application was decommissioned months earlier.
- An AI operations group reviews tool invocation patterns and discovers that an agent has access to an internal search API it no longer uses, supporting removal of unnecessary credentials and scope reduction.
- A cloud security team uses findings from the Ultimate Guide to NHIs to prioritise identities with unclear purpose, then validates whether those secrets are still tied to active business processes.
- A security reviewer aligns the final decision with NIST Cybersecurity Framework 2.0 outcomes by documenting whether each asset remains necessary, owned, and monitored.
Why It Matters in NHI Security
Usage review prevents organisations from confusing technical activity with legitimate business necessity. In NHI security, that distinction is critical because an active token, service account, or agent permission can still be excessive, orphaned, or misaligned with the current operating model. NHI Mgmt Group notes that 97% of NHIs carry excessive privileges, which means continued use does not imply appropriate use; it may simply mean the identity has remained in place long after its purpose changed.
The risk is not only cost waste. Unreviewed usage can preserve pathways for lateral movement, hidden integrations, and weak accountability across third parties, pipelines, and autonomous tools. The same governance discipline that reveals sunk cost also reveals where access should be reduced, ownership reassigned, or credentials revoked. That makes usage review a practical bridge between financial governance and identity risk reduction, especially when teams must decide whether an active dependency is truly needed.
Organisations typically encounter the need for usage review only after a breach, outage, audit finding, or failed retirement effort, at which point the question of whether the identity should have existed at all becomes operationally unavoidable to address.
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 Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Usage review helps find stale or unjustified non-human identities and their overprovisioned access. |
| NIST CSF 2.0 | GV.OV-01 | Governance and oversight require validating whether assets still support business objectives. |
| NIST Zero Trust (SP 800-207) | SC-7 | Zero Trust depends on continuously validating whether access is still necessary and relevant. |
Tie usage review to governance cycles that justify retention, reduction, or retirement decisions.
Related resources from NHI Mgmt Group
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
