A vaultless architecture delivers secrets through a managed service instead of a customer-operated vault server. The governance challenge does not disappear; it shifts to policy, identity, and runtime control over when secrets can be issued, retrieved, and revoked.
Expanded Definition
Vaultless architecture is a secrets delivery model in which a managed service brokers access to credentials, tokens, API keys, or certificates without requiring the customer to run a traditional vault server. In NHI environments, the important distinction is not whether secrets are “stored somewhere,” but whether policy, identity, and runtime conditions govern issuance, retrieval, and revocation. That makes vaultless design closer to an access-control problem than a storage problem. It also means the security posture depends heavily on the trust boundary between the workload, the identity layer, and the managed service provider. NIST SP 800-53 Rev. 5 provides a useful control vocabulary for thinking about access enforcement, auditability, and system integrity in this model through NIST SP 800-53 Rev 5 Security and Privacy Controls. Definitions vary across vendors, so teams should verify whether “vaultless” means secretless runtime retrieval, outsourced vault operations, or just a hosted vault with a different management plane.
The most common misapplication is treating vaultless as permissionless, which occurs when teams assume managed delivery removes the need for lifecycle controls, logging, and revocation policy.
Examples and Use Cases
Implementing vaultless architecture rigorously often introduces a tighter dependence on identity signals and service availability, requiring organisations to weigh operational simplicity against reduced local control.
- Ephemeral container workloads retrieve short-lived database credentials at startup, then discard them before the pod is terminated, reducing residual secret exposure.
- CI/CD pipelines request secrets just in time for deployment, with issuance tied to workload identity and build provenance rather than a manually maintained vault mount.
- Serverless applications consume API keys through a managed delivery layer, avoiding embedded static credentials in code while still enforcing retrieval policy.
- Developers use a central service to broker certificates and tokens across multiple environments, which can simplify operations but also concentrates dependency on one control plane. The Guide to the Secret Sprawl Challenge is useful for understanding why centralisation is often pursued in the first place.
- Dynamic secret patterns work best when the runtime can request a fresh credential per session, as described in the Ultimate Guide to NHIs — Static vs Dynamic Secrets and in the general guidance of NIST SP 800-53 Rev 5 Security and Privacy Controls.
Why It Matters in NHI Security
Vaultless architecture matters because it can reduce vault sprawl without removing the underlying NHI risk: if identity is weak, secrets still leak. NHIMG research shows that 44% of organisations are currently using a dedicated secrets management system, which underscores how many teams are still operating with incomplete governance maturity. In practice, vaultless designs only improve security when issuance is constrained by workload identity, policy, and observability. Otherwise, they simply shift exposure from a self-managed vault to a brokered service that may be harder to inspect or revoke during an incident. That is why vaultless design aligns closely with NHI controls for lifecycle discipline, runtime authorization, and secret minimization, especially when organisations use The 2025 State of NHIs and Secrets in Cybersecurity findings to assess exposure patterns such as token duplication and stale access.
Organisations typically encounter the governance cost of vaultless architecture only after a token is exposed, at which point retrieval policy, revocation speed, and audit logs become 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, NIST SP 800-63, NIST Zero Trust (SP 800-207) 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-02 | Addresses secret handling and exposure risk in NHI environments. |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access applies to secret retrieval and service identity. |
| NIST SP 800-63 | Digital identity assurance informs how workloads are trusted before secrets are issued. | |
| NIST Zero Trust (SP 800-207) | Zero trust requires explicit verification for each secret request. | |
| NIST AI RMF | AI risk controls apply when agents retrieve secrets through managed services. |
Enforce issuance, storage, and revocation controls for every non-human credential path.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on August 17, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
