Continuity of statutory service
Systems supporting mandated functions cannot pause for migration, so sequencing has to allow parallel operation and reversible cutover.
Federal, state, and local agencies
Government and Public Sector
Agencies modernize inside statutory obligations, appropriation cycles, and authorization processes that require documented control evidence. The programme has to preserve constituent service while replacing systems that support mandated functions.
Business challenges
What makes change difficult in this sector
Authorization evidence
Control assertions require artefacts, not statements. Evidence production must be designed into operations rather than assembled before an assessment.
Funding cadence
Multi-year transformation must be decomposed into independently fundable increments that each deliver defensible value.
Records and retention
Information governance obligations apply to collaboration platforms as much as to systems of record.
Architecture principles
Decisions we hold constant
- Every change is reversible within a defined window
- Control evidence is generated by the platform, not by staff effort
- Identity is consolidated before workloads are moved
- Public-facing availability takes precedence over internal convenience
Governance considerations
- NIST SP 800-53 control mapping maintained as a living artefact
- System Security Plan updates tied to architectural change records
- Time-bound exception register reviewed by a named authorising official
- Accessibility conformance treated as a release gate
Transformation phases
A sequence that protects service while it changes
Baseline and authorization posture
Inventory systems, owners, data flows, and current control evidence. Identify where assertions are undocumented.
Identity and access foundation
Consolidate directories, reduce standing privilege, and instrument access review before migration begins.
Sequenced workload movement
Move low-dependency workloads first to establish patterns, then approach statutory systems with parallel-run plans.
Evidence and sustainment
Transition control monitoring and reporting to agency operations with documented procedures.
Technology alignment
Where platform capability supports the approach
Identity
Microsoft Entra ID for consolidated identity, conditional access, and privileged access review.
Cloud platform
Microsoft Azure landing zones with policy-based guardrails and separated environments.
Information governance
Microsoft Purview for classification, retention, and audit visibility across Microsoft 365.
Security operations
Microsoft Sentinel and Defender for consolidated detection, investigation, and reporting.
Microsoft technologies are referenced descriptively for architectural context. EAX Systems is a verified member of the Microsoft AI Cloud Partner Program; membership does not imply Microsoft endorsement, a Solutions Partner designation, or certification.
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