Ownership should sit with the identity governance function, with operational execution shared across IAM, PAM, and application owners. That ensures the same policy covers who can request access, how it is approved, how long it lasts, and how it is removed. Without clear ownership, temporary access becomes fragmented and inconsistent.
Why This Matters for Security Teams
ephemeral access only works when ownership is unambiguous. If identity governance, IAM, and PAM each treat temporary access as someone else’s problem, approvals drift, durations widen, and revocation becomes inconsistent. That is especially risky for secrets and privileged sessions that should exist only long enough to complete a task. NHI Management Group’s Top 10 NHI Issues and the OWASP Non-Human Identity Top 10 both point to the same operational gap: temporary access fails when lifecycle control is fragmented.
The practical problem is not just who grants access, but who defines policy, enforces expiry, and proves removal. In well-run programs, identity governance sets the rules while IAM and PAM provide the mechanisms. In weaker programs, teams optimize their own workflow and no one owns the end-to-end control. That creates audit gaps, overlong access windows, and exceptions that quietly become permanent. In practice, many security teams discover this only after a privileged credential or session remains active long after the business task ended, rather than through intentional control design.
How It Works in Practice
The cleanest operating model is policy ownership in identity governance, with execution split across IAM for request and approval workflow, PAM for privileged session control, and application or platform owners for business justification. NIST’s Cybersecurity Framework 2.0 supports this kind of shared accountability by separating governance from technical enforcement, which is exactly what ephemeral access needs.
In practice, the governance function should define the control standard: who may request temporary access, which roles or workloads qualify, what approval evidence is required, maximum time-to-live, and mandatory revocation triggers. IAM then handles joiner-mover-leaver style orchestration for non-privileged or workload access, while PAM handles just-in-time elevation, session brokering, command recording, and expiration for privileged use. For NHI environments, this matters because access is often machine-driven and task-specific, so lifecycle process guidance for NHIs should be enforced alongside static vs dynamic secrets guidance.
- Identity governance owns policy, risk acceptance, and periodic review.
- IAM automates request intake, approval routing, and entitlement updates.
- PAM controls elevation, session duration, recording, and forced expiry.
- Application owners validate task necessity and business context.
- Security operations verify that revocation actually occurs at task completion.
This model works best when each control has a single accountable owner and a shared audit trail. It also aligns with the reality that ephemeral access is not a one-time grant but a lifecycle event with issuance, use, and teardown. These controls tend to break down in highly federated environments where cloud, SaaS, and on-premises platforms each enforce different expiry semantics and no single system can prove revocation end to end.
Common Variations and Edge Cases
Tighter ephemeral access governance often increases operational overhead, requiring organisations to balance stronger control against speed for engineering and operations teams. That tradeoff becomes sharper when access spans hybrid infrastructure, third-party vendors, or non-human workloads that need short-lived tokens rather than human-style approvals. Current guidance suggests the governance owner should still be central, but the enforcement path may vary by environment.
For example, an SRE team may need rapid break-glass access during an outage, while a cloud automation agent may need per-task credentials issued through a workload identity flow. In those cases, identity governance should still define the policy ceiling, but PAM or workload tooling may execute the grant automatically within pre-approved limits. The NHIMG research on regulatory and audit perspectives is useful here because auditors want evidence of who approved, why access existed, and when it was removed. The broader NHI security data also shows why this matters: 88.5% of organisations say their non-human IAM practices lag human IAM, which means ephemeral access governance cannot be left to ad hoc platform conventions.
There is no universal standard for this yet, but the best practice is evolving toward one owner for policy, one system of record for approvals, and automated expiry everywhere possible. That is the only way to keep temporary access temporary.
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 |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Ephemeral access depends on short-lived credentials and timely revocation. |
| NIST CSF 2.0 | PR.AC-4 | Covers access permissions and supports shared governance across IAM and PAM. |
| NIST AI RMF | Governance ownership is needed for runtime authorisation and accountability. |
Define accountable owners for access decisions, evidence, and ongoing control monitoring.
Related resources from NHI Mgmt Group
- Who should own lifecycle governance across IAM and access controls?
- Who should own governance for AI-assisted developer access: IAM, engineering, or platform teams?
- Why do SSO tools often fail to solve access governance on their own?
- Who should own access decisions when service management and IAM are connected?
