Treat stable, repeatable job functions as role candidates and cross-application or frequently changing access as template candidates. A good test is whether the access pattern is easy to explain, review, and maintain over time. If a small variation forces a new permanent role, that is usually a sign the access belongs in a reusable template with governed exceptions.
How to separate durable role access from reusable template access
Use the stability of the access pattern as the deciding factor. Roles should represent access that is consistently needed for a defined job function, while templates should capture access that is shared across jobs, changes more often, or would otherwise force role sprawl. The question is not whether access is important, but whether it is stable enough to remain a standing entitlement.
A practical way to test this is to ask whether the access can be described in one sentence, reviewed without special-case interpretation, and kept current without frequent redesign. If the answer depends on small exceptions, local variations, or one-off combinations of permissions, that is usually a sign the access belongs in a reusable template with governed assignment rules.
In mature IAM and IGA Basics, roles are treated as a way to express business intent, while templates are used to standardise repeated permission bundles that sit underneath that intent. That separation helps prevent role explosion, but it also keeps access governance understandable to reviewers and auditors.
When a permission should stay in a role
Keep access in a role when it is tied to a stable job function, has a clear owner, and is likely to apply to many people in the same function with little variation. This is the right home for access that is predictable, durable, and easy to recertify because the business justification does not change often.
Roles are also the better fit when the entitlement is part of a clearly defined operating model, such as a team function, a system operator function, or a standard business responsibility. If you need repeated exceptions to make the role fit, the role is probably carrying too much detail and should be simplified.
That is why access reviews matter. A well-structured role should be easy to validate in an Access Review Checklist, because reviewers should be able to confirm the business purpose without reconstructing the access from scratch.
When a permission should move into a reusable template
Move access into a template when the pattern is reusable across roles, changes with the environment, or varies by context more than by job title. Templates are useful when the same baseline access is needed in multiple roles, but the final assignment should be assembled from governed building blocks rather than duplicated in each role.
Templates also help when access is likely to evolve. If a small change would otherwise require creating a new permanent role, the template approach usually preserves flexibility while keeping the governance model cleaner. That is especially valuable when the organisation needs to separate stable business intent from implementation detail.
Well-designed permission structures often map best to Authorisation Models Guide principles, where the job function stays readable at the role layer and the finer-grained access logic sits in reusable policy or entitlement components.
Risk and Threat Considerations
Overloading roles with too many exceptions creates review fatigue, privilege creep, and hidden dependencies between unrelated access needs. Overusing templates without clear ownership can create the opposite problem, where access becomes so modular that no one can explain the effective privilege set with confidence.
Failure mechanism: When organisations encode every variation as a separate role, they multiply standing access, make certification harder, and increase the chance that obsolete permissions survive because no one wants to retire a “special” role that still has users.
Impact: The result is poorer least-privilege discipline, slower access change, more difficult audits, and a higher chance that a user or service keeps access longer than the business still needs it.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CSA Cloud Controls Matrix and NIST SP 800-53 Rev 5 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CSA Cloud Controls Matrix | IAM — Identity & Access Management | Role and template decisions shape cloud identity governance and access structure. |
| Recommendation — Use IAM controls to standardize role design and keep exceptions governable. | ||
| NIST SP 800-53 Rev 5 | AC-2 — Account Management | Role versus template choices affect account provisioning, entitlement assignment, and reviewability. |
| AC-6 — Least Privilege | The decision determines how much standing access is embedded in roles. | |
| IA-5 — Authenticator Management | Templates often carry reusable access material that must be governed through its lifecycle. | |
| Recommendation — Apply AC-2 to keep access assignments traceable and reviewable. Apply AC-6 to minimize standing access and avoid excess entitlements. Apply IA-5 to control the lifecycle of reusable access material. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | Role and template design are core access-control governance decisions. |
| Recommendation — Define access rules so roles stay stable and template exceptions remain controlled. | ||
Practitioner Guidance
What to verify: Review whether each role can be described as a durable job pattern rather than a bundle of convenience permissions. If the business owner cannot explain why the role exists without naming multiple exceptions, the design is too brittle.
Decision rule: If the access is stable, repeatable, and naturally reviewed as one unit, keep it in a role. If the access is shared across several roles, changes by context, or keeps generating new variants, extract it into a reusable template and govern the exceptions explicitly.
Common mistake: Treating every permission difference as a reason to create another permanent role. That approach makes access harder to understand, harder to recertify, and harder to retire when the underlying business need changes.
Practitioner takeaway: Roles should model enduring business functions, while templates should absorb repeatable variation. The healthiest design is the one that keeps access intelligible at review time without freezing every operational difference into a permanent role.
Related resources from NHI Mgmt Group
- How do organisations decide which access controls should stay central and which should move to resource owners?
- How should organisations handle multi-affiliation access when employees move between roles or contracts?
- How should healthcare organisations implement role-based access control when staff, contractors, and temporary workers move in and out of roles quickly?
- Why can relying only on cloud IAM roles become difficult as organisations move to OIDC-based authentication and multi-account access?