Who should own approval authority for app access requests?

Why This Matters for Security Teams

Approval authority is not just a workflow detail. It determines whether access is granted on business need or on convenience, and that distinction matters most when request volume is high or service desk pressure is intense. Business and app owners are best placed to judge legitimacy, while IAM and IGA must keep the policy model, evidence requirements, and review cadence consistent. That separation mirrors the control discipline described in the OWASP Non-Human Identity Top 10.

The risk is not theoretical. NHIMG notes that 97% of NHIs carry excessive privileges and 80% of identity breaches involved compromised non-human identities such as service accounts and API keys, which is why approval workflows must be designed as control points, not administrative shortcuts. The same governance problem appears in human access requests when approvers lack context or are allowed to self-approve through informal channels. In practice, many security teams discover over-approval only after access has already been used outside the intended business purpose, rather than through intentional review discipline.

How It Works in Practice

The cleanest operating model separates decision ownership from control ownership. The business or application owner decides whether the requester has a legitimate need, because that role understands the data, system criticality, and operational impact. IAM or IGA then owns the mechanics: who can approve what, what evidence is required, how exceptions are handled, and how often access is recertified. This is consistent with the broader governance approach in the Ultimate Guide to NHIs, especially where high privilege and weak rotation create avoidable exposure.

• Use business owners to validate purpose, duration, and sensitivity of access.
• Use IAM or IGA to enforce role mapping, approval thresholds, and segregation of duties.
• Require evidence that supports the request, such as ticket context, project assignment, or manager confirmation.
• Make emergency access explicit, time-bound, and reviewed after the event.
• Automate recertification so approvals are rechecked against current need, not historical convenience.

Current guidance suggests that approval should be anchored in the application or data domain rather than in central IT alone, because central teams often lack the context to evaluate business legitimacy. This also aligns with Zero Trust thinking: access decisions should be specific, auditable, and continuously revalidated, not assumed to remain valid after the first grant. NHIMG’s research on the 52 NHI Breaches Analysis shows how quickly weak control boundaries become real exposure when entitlement sprawl goes unchecked.

These controls tend to break down when approvals are routed through generic service desk queues because the approver cannot see the real business owner, the actual system risk, or the exception history.

Common Variations and Edge Cases

Tighter approval control often increases workflow friction, requiring organisations to balance request speed against review quality. That tradeoff is real in high-volume environments, but it should not be solved by weakening approval ownership. Instead, mature teams use delegated approvers, pre-approved access bundles, and time-limited exceptions so the business can move quickly without collapsing the control model.

There is no universal standard for this yet, but best practice is evolving around a few patterns. For low-risk apps, the app owner may approve standard access while IAM enforces policy. For regulated systems, the approver may need to be both the business owner and a control owner with explicit audit accountability. For privileged or sensitive access, security or IAM should often add a second check, especially where the request could create separation-of-duties issues.

Teams should be careful not to confuse ownership with administration. App owners should not be burdened with policy design, and IAM should not be the final authority on business legitimacy. That split keeps the process defensible during audits and practical during incidents. The strongest programs also document who may approve emergencies, who reviews post-approval evidence, and when recurring requests should be converted into role-based access instead of handled one ticket at a time.

Related resources from NHI Mgmt Group

• Who should own OAuth app and service account cleanup?
• Why do SSO tools often fail to solve access governance on their own?
• What do security teams get wrong about self-service app requests?
• Who should own access decisions when service management and IAM are connected?