Organisations should treat digital identity as a governed identity layer that represents a person or entity online, then align the definition to the business use case. The report’s core point is that the term is used in multiple ways, so teams need a shared vocabulary before selecting controls, setting policy, or comparing identity assurance models. Clear definitions reduce confusion in implementation and procurement.
Define the term before you compare controls or vendors
Different teams often use digital identity to mean different things: a person’s online representation, an authentication account, a verified credential, or a broader governed identity record. The practical fix is to define the term in the context of the business use case, then publish that definition as the reference point for policy, architecture, procurement, and assurance decisions. That avoids teams arguing over labels when they should be aligning on control intent.
A useful definition should answer three questions: what entity is being represented, what trust decision the identity supports, and what lifecycle or assurance properties the organisation expects. If those are not explicit, one team may optimise for login experience while another expects strong identity proofing or governance, and both may believe they are talking about the same thing.
For teams building identity programs, the definition should stay precise enough to support operational decisions but broad enough to remain usable across business functions. A narrow technical definition helps engineers, but an enterprise definition needs to work for policy owners, risk teams, and procurement as well. That is why a shared vocabulary matters before any control selection begins.
The same discipline is reflected in broader identity guidance such as Ultimate Guide to NHIs, which treats identity as a governed layer with lifecycle and access implications rather than a purely technical label, and in NIST SP 800-63 Digital Identity Guidelines, which separates identity proofing, authentication, and federation concerns. Those distinctions are useful here because teams often collapse them into one word and then misalign requirements.
Translate the definition into decision rules the organisation can actually use
Once the definition is agreed, organisations should turn it into decision rules. For example, if the identity is being used for access to a regulated system, the definition must support stronger assurance, clearer ownership, and auditability. If it is only supporting a low-risk customer interaction, the organisation may accept a different assurance model. The point is not to standardise every identity the same way, but to make the business meaning of the term visible before controls are selected.
This is especially important when teams compare products or frameworks. One vendor may describe a digital identity platform as an access product, another as an identity verification service, and a third as an orchestration layer. Without a shared definition, teams can evaluate very different capabilities as if they were interchangeable. A stable internal definition makes procurement more defensible and reduces the risk of selecting tools that solve the wrong problem.
Good decision rules also separate identity from adjacent concepts. Identity answers who or what is being represented. Authentication proves that claim. Authorisation determines what that entity may do. If those boundaries are blurred, teams may overbuild one control and underbuild another. A concise internal glossary, tied to architecture and policy, usually prevents more confusion than a longer but looser standards document.
When the business use case involves digital trust across organisations or jurisdictions, definitions should also align to applicable regulatory language. The eIDAS 2.0, EU Digital Identity Framework shows how formally bounded identity terms support interoperability and assurance across ecosystems. Even if an organisation is not operating in that regime, the lesson is useful: precise definitions reduce ambiguity when identity has legal, operational, or cross-boundary consequences.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-63 and NIST CSF 2.0 set the technical controls, while EU AI Act and DORA define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | Digital Identity Guidelines — Digital Identity Guidelines | Defines assurance, proofing, and authentication terms used in digital identity programs. |
| Recommendation — Align enterprise terminology to the identity proofing and authenticator assurance model. | ||
| NIST CSF 2.0 | GV.OC — Organisational Context | Requires shared business context so identity definitions support policy and control decisions. |
| PR.AA — Identity Management, Authentication, and Access Control | Maps the definition to how identities are represented and used for access decisions. | |
| Recommendation — Define digital identity in business-context terms before selecting controls or tools. Tie the identity definition to access, authentication, and lifecycle requirements. | ||
| EU AI Act | Article 5 — Prohibited AI Practices | Supports careful identity handling where digital identity intersects with high-risk or deceptive AI uses. |
| Recommendation — Review identity terminology and controls where AI-driven identity decisions affect regulated use. | ||
| DORA | Article 9 — ICT Risk Management Framework | Reinforces clear terminology and governance for identity-related ICT controls in regulated environments. |
| Recommendation — Document identity definitions within ICT risk governance and control ownership. | ||
Practitioner Guidance
What to prioritise: Anchor the definition to the decision the identity must support, not to a preferred tool, login flow, or team vocabulary. If the definition cannot be used to decide assurance level, ownership, or lifecycle expectations, it is too vague to govern.
What to verify: Check that every team uses the same meaning for identity, authentication, and authorisation in policy, architecture, procurement, and assurance discussions. If those terms are interchangeable in meetings, the organisation will eventually mis-specify controls or buy the wrong capability.
Common mistake: Treating digital identity as a single product feature instead of a governed concept. That shortcut usually creates gaps between business intent and implementation, especially when one team assumes identity means account management while another assumes it means verified representation.
Practitioner takeaway: The best definition is the one that removes ambiguity from real decisions, so use the business use case to set the boundary and then enforce that wording consistently across teams.
Related resources from NHI Mgmt Group
- How should security teams use digital identity wallets without weakening access control?
- What should IAM teams do when cloud and data centre workloads use different identity primitives?
- How should organisations govern identity when digital access and physical access are split across different systems?
- How should security teams design an IGA program around different identity personas in complex organisations?
