They break down because the environment changes faster than the governance workflow can keep up. Role changes, onboarding, app sprawl, and shadow access create stale records, delayed approvals, and inconsistent ownership. In practice, manual processes fail when they cannot keep entitlement state current enough for confident decisions.
Why This Matters for Security Teams
Manual access request and certification workflows were built for slower, human-centered environments. SaaS changes the problem shape: entitlements shift constantly, admins delegate access across apps, and shadow access appears faster than reviewers can validate it. That creates a governance lag that is not just inefficient, but materially risky when stale access persists after a role change or project end. The exposure pattern aligns with what NHI Management Group documents in the Ultimate Guide to NHIs, where visibility gaps and excessive privilege are recurring failures.
For SaaS estates, the issue is not whether a manager can approve access, but whether the approval reflects the current state of the app, the identity, and the entitlement. When that state is already outdated by the time a recertification lands in a queue, the process becomes performative. As OWASP notes in the OWASP Non-Human Identity Top 10, identity risk is increasingly driven by machine- and application-side access paths that manual review cannot keep current. In practice, many security teams discover entitlement drift only after a SaaS audit, not through timely certification.
How It Works in Practice
In SaaS environments, access governance breaks down because the entitlement graph is dynamic. Users gain access through direct grants, nested group membership, app-specific roles, automation accounts, and integrations that never pass through a single ticketing queue. By the time a reviewer sees a certification list, the real access path may have changed. That is why current guidance increasingly favors continuous discovery, event-driven updates, and policy-based enforcement over periodic human review alone. NHI Management Group’s Lifecycle Processes for Managing NHIs highlights this as a lifecycle problem, not a one-time approval problem.
Practically, mature teams reduce reliance on manual attestations by doing three things:
- Syncing SaaS entitlements continuously from source systems and app APIs, rather than waiting for quarterly review cycles.
- Using ownership metadata so each entitlement has a responsible business and technical owner.
- Requiring event triggers for joiner, mover, leaver, and high-risk role changes so access changes are evaluated near real time.
For controls, the closest external anchor is the OWASP Non-Human Identity Top 10, which reflects the broader need to treat access as a lifecycle concern. The same logic applies to SaaS certifications: if the system cannot prove who owns an entitlement, why it exists, and when it was last used, then manual approval becomes a weak substitute for actual assurance. These controls tend to break down in large SaaS tenants with delegated administration and hundreds of app-to-app integrations because entitlement state mutates faster than review queues can close.
Common Variations and Edge Cases
Tighter certification controls often increase operational overhead, requiring organisations to balance assurance against reviewer fatigue and business disruption. The tradeoff becomes most visible in SaaS-heavy teams with many low-risk entitlements, where a full manual review can generate noise without improving security decisions.
Best practice is evolving, but current guidance suggests stratifying access by risk. High-impact admin roles, external collaboration access, and privileged automation should receive frequent or event-driven review, while low-risk standard entitlements can be handled with lighter-touch attestations plus continuous monitoring. This is also where NHI lessons matter: many SaaS access paths are effectively machine-mediated, so governance must account for API tokens, service accounts, and delegated app access, not only human users. The NHIMG Ultimate Guide to NHIs — Key Challenges and Risks is useful here because it frames stale access, poor visibility, and excessive privilege as systemic conditions, not isolated exceptions.
Manual certification also struggles when ownership is unclear, when contractors move across business units, or when SaaS vendors expose roles that do not map cleanly to internal job titles. In those cases, a reviewer can approve based on organizational context that is already obsolete. Where apps support it, automated deprovisioning, just-in-time elevation, and usage-based recertification are more dependable than calendar-driven campaigns. The exception is highly regulated environments that still require periodic sign-off for audit evidence, but even there, the evidence should be fed by continuous entitlement telemetry rather than static spreadsheets.
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 | Manual reviews fail when NHI ownership and lifecycle state are stale. |
| NIST CSF 2.0 | PR.AC-4 | SaaS access drift is a privilege management problem, not just approval workflow noise. |
| NIST AI RMF | GOVERN | Governance guidance supports accountable, continuously updated access decisions. |
Continuously discover and rotate access state so certifications are based on current entitlement data.
Related resources from NHI Mgmt Group
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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