DTM 25-003 User Attribute Federation: Building DoD ZTA CoA-Aligned ICAM Foundations

Most DoD Zero Trust programs do not stall on conditional user access because the identity provider cannot talk to the application. They stall because the program has not defined which user and group attributes matter, where those attributes originate, how fresh they must be, and how they drive an authorization decision across mission systems, contractors, coalition users, and DDIL environments.

That is a practical implementation problem, not a theory problem. Under ATO pressure, with PPBE cycles already locked and mission owners protecting operational timelines, teams often connect IdPs first and clean up attribute governance later. DTM 25-003 does not support that sequence. Conditional access depends on trusted, federated, policy-usable attributes from the start.

What DTM 25-003 Requires for Conditional User Access

DTM 25-003 – Implementation of Zero Trust Cybersecurity Activities makes conditional access a required Zero Trust activity, not an optional ICAM enhancement. For the User Pillar, the requirement is clear: DoD Components must move beyond static authentication and implement access decisions based on federated user attributes tied to authoritative sources, policy enforcement points, and mission risk.

The DoD Zero Trust Strategy reinforces the same direction. Attribute-based access control is not achieved by standing up SAML or OIDC connections alone. It requires identity, credential, access, mission, clearance, organization, device, and session context to be available for dynamic authorization. The DoD ZTA CoA gives program offices the architecture path for evaluating those capabilities. NSA ZIG adds the operating discipline: continuously validate user attributes through federated sources and enforce least privilege through conditional policies.

In plain terms, a DoD program cannot claim meaningful conditional user access if the access decision only knows that a user authenticated successfully. The policy engine needs to know who the user is, what role they are performing, what group or unit context applies, whether their attributes came from authoritative sources, whether those attributes are current, and whether local disconnected capabilities still align with centralized ICAM governance.

The Assessment Question That Exposes the Real Gap

The anchor question for this capability is direct: Has the organization identified all relevant user and group attributes that need to be federated with the enterprise ICAM solution?

That question maps to DoD ZTA CoA User Pillar activity 1.2.4.1 and sits at the Strategic Foundation level. It is a Maturity Level 4 capability because it forces the program to move from basic identity integration to enterprise attribute readiness. This is where many programs discover that they have working authentication but immature authorization.

The diagnostic cannot stop at the anchor question. We also look at whether the cloud-based enterprise IdP supports both cloud and on-premises applications for authentication and authorization. Many mission portfolios still include legacy applications, enclaves, tactical systems, and special-purpose operational tools. If the IdP only supports the SaaS layer, the program has not solved conditional user access for the mission environment.

We also test whether universal roles are being used consistently across organizations and systems. This is where technical teams and mission owners often disagree. One system’s “operator,” another system’s “analyst,” and a third system’s “privileged mission user” may represent overlapping or conflicting permissions. Without standardized roles and attributes, conditional policies become local exceptions wrapped in Zero Trust language.

Governance is the next test. Is there a structure for managing roles and permissions, including approving changes? Is there a process to mandate standardized roles and permissions? If role changes are made through local admin decisions, ticket-by-ticket workarounds, or contractor-specific processes, the enterprise ICAM solution cannot support consistent authorization.

DDIL environments are another critical test. Local capabilities must support disconnected operations, but they still need to align with centralized ICAM management when connectivity is restored. That means local caches, mission role mappings, privileged access, and emergency access paths must be governed, monitored, and reconciled.

Finally, we look for auditing and monitoring of role and permission use. Conditional access is not complete when the policy is written. The program needs evidence that roles are used as intended, exceptions are visible, stale permissions are removed, and access behavior feeds continuous improvement.

What AISE Scores Mean in Practice

AISE, Zephon’s Zero Trust Maturity Platform, evaluates these questions once and produces two separate maturity scores: a DoD ZTA CoA maturity score and a CISA ZTMM score. For DoD program offices, the DoD ZTA CoA score leads. The CISA ZTMM score is additional context for cross-government comparison, not noise in the DoD score.

For conditional user access, a low AISE score usually means the program has identity connections but incomplete attribute mapping. The IdP may authenticate users, but the policy engine lacks authoritative clearance, mission role, organization, group, contractor status, device posture, or environmental context. That creates access decisions that are technically functional but weak from a Zero Trust standpoint.

Maturity Level 1

At Level 1, access is mostly application-specific. User roles are local, groups are inconsistently named, contractor attributes are handled separately, and federation is limited to authentication. Attribute provenance is unclear. Freshness is usually assumed, not measured. DDIL access may rely on static local accounts or manually maintained lists.

Maturity Level 3

At Level 3, the program has defined core user attributes and mapped some authoritative sources. Enterprise IdP integration supports a portion of cloud and on-premises applications. Standard roles exist, but adoption varies across systems and organizations. Governance is present but still dependent on manual review and local enforcement. Audit data exists, but it is not consistently tied back to policy refinement.

Maturity Level 5

At Level 5, conditional user access is policy-driven across the enterprise. User and group attributes are mapped from authoritative sources, including personnel, mission, clearance, organization, contractor, and device-related sources. Roles are standardized and governed. Attribute freshness is monitored. DDIL operations support local mission execution while reconciling with centralized ICAM management. Auditing shows whether roles and permissions are used as intended.

Turning Scores Into Milestones

A maturity score only matters if it changes the work plan. For DoD programs, we translate the DoD ZTA CoA score into milestones that fit the program’s funding, acquisition, and ATO realities. The goal is not to boil the ocean. The goal is to make the next increment defensible and executable.

• Milestone 1: Build the authoritative attribute inventory for users, groups, roles, mission context, clearance, contractor status, device posture, and DDIL needs.

• Milestone 2: Map each attribute to its authoritative source, owner, update frequency, and required freshness for access decisions.

• Milestone 3: Normalize roles across priority systems and remove local naming conflicts that block enterprise policy enforcement.

• Milestone 4: Connect the enterprise IdP to priority cloud and on-premises applications using attribute-based policy decisions, not authentication-only federation.

• Milestone 5: Establish role and permission governance with approval, audit, exception handling, and mission-owner accountability.

• Milestone 6: Validate DDIL access models so disconnected operations support the mission while remaining aligned with centralized ICAM management.

This approach gives the program office a path that can be aligned to increments, contract tasks, ATO packages, and PPBE-driven funding windows.

ROM Timelines for Moving Forward

Timelines depend on system count, mission criticality, data sensitivity, enclave complexity, and existing ICAM investments. Still, we see common ranges across federal environments.

• 30 to 45 days: Complete an AISE maturity baseline, identify attribute gaps, map priority authoritative sources, and produce a DoD ZTA CoA-focused action plan.

• 60 to 90 days: Define the enterprise attribute schema, assign attribute owners, normalize priority roles, and identify the first wave of applications for conditional access integration.

• 3 to 6 months: Implement conditional access for priority user populations and mission applications, including cloud and selected on-premises systems.

• 6 to 12 months: Expand attribute federation across additional systems, strengthen governance, add monitoring, and address contractor and coalition user populations.

• 12 to 18 months: Mature DDIL alignment, automate stale permission detection, and institutionalize continuous role and permission review across the portfolio.

These are realistic ranges. Programs with strong enterprise ICAM foundations can move faster. Programs with fragmented directories, legacy applications, or multiple mission enclaves need more sequencing. The work still starts in the same place: define the attributes before scaling the integrations.

Anonymized DoD Scenario

A DoD mission program we assessed had already connected several applications to an enterprise IdP. On paper, the program looked ahead of schedule. In practice, conditional access was limited because the policy engine only received basic identity and group data. Mission role, contractor status, clearance eligibility, privileged access designation, and device posture were either missing or inconsistent across systems.

The first action was not another connector. We built the attribute inventory and mapped each required field to an authoritative source. Then we worked with the program office, ICAM team, mission owners, and contractor support team to standardize roles for the first set of high-priority applications. Local permissions that had grown over years were documented, rationalized, and placed under governance.

The program then phased conditional access into the ATO boundary for priority systems. Instead of presenting Zero Trust as a separate workstream, they tied it to existing access control updates, identity modernization, and mission application releases. That reduced disruption and gave leadership a clearer view of what DTM 25-003 implementation meant in operational terms.

Get a Defensible Baseline

Conditional user access is not an IdP integration project. It is an attribute federation, governance, and policy enforcement capability. DTM 25-003, the DoD Zero Trust Strategy, DoD ZTA CoA, and NSA ZIG all point in the same direction: access decisions must use trusted, current, federated attributes tied to mission risk.

AISE gives DoD program offices one assessment and two separate scorecards: your DoD ZTA CoA maturity score and your CISA ZTMM score. The DoD score leads, cleanly separated from civilian framework noise, while the CISA score provides additional context when needed.

Get your AISE maturity baseline and see where you stand against DTM 25-003 at zephon.tech/zt.