Government

Why Microsoft Now for Federal + State + Local + DIB

In 2026, the Microsoft adoption in the Government and Defense Industrial Base (DIB) will be influenced by three key factors.

• First, cyber executive orders (EO 14028, EO 14117, EO 14086) and the Office of the National Cyber Director (ONCD) strategy require Zero Trust Architecture across federal civilian agencies. These mandates have strict deadlines between 2024 and 2026. CISA's Zero Trust Maturity Model 2.0 and the Federal Zero Trust Strategy (OMB M-22-09) outline implementation expectations for each agency. Microsoft 365, Microsoft Entra, Microsoft Defender, Microsoft Sentinel, and Microsoft Purview are the most-cited tools in agency ZTA roadmaps.
• Second, the CMMC 2.0 final rule, effective December 2024, will enforce mandatory cybersecurity certification throughout the DIB supply chain. Microsoft 365 GCC High and Azure Government are the most widely used platforms for CMMC-aligned Level 2 and Level 3 implementations.
• Third, the rollout of Microsoft 365 Copilot in Government Community Cloud and GCC High introduces AI-assisted productivity to federal and DIB workloads. This complies with FedRAMP High, ITAR, and DoD IL4 standards, enabling AI productivity scenarios that were previously limited to commercial availability.

For federal CIOs, agency CISOs, DoD program managers, and DIB primes, choosing a Microsoft consulting partner is now essential. This decision is critical for meeting deadlines related to cyber, AI, and modernization. These timelines are monitored by Congress and DoD program offices.

EPC Group's government practice is based on extensive experience. Errin O'Connor, a former Lead Architect at the Federal Reserve Bank of New York, offers valuable insights from his work with the Treasury.

The firm has successfully completed Microsoft projects for:

• Federal agencies
• State governments
• Local municipalities

• Federal agencies
• State governments
• Local municipalities

• NASA
• Department of Defense primes
• Federal civilian agencies
• State governments
• DIB sub-tier contractors

This blend of federal experience, Microsoft Solutions Partner status with all six designations, and Microsoft consulting sets us apart since 1997.

GCC vs GCC High vs Azure Government Secret — Choosing the Right Sovereign Tenant

Choosing the right sovereign Microsoft 365 + Azure tenant is the first key decision in any government project. Misalignment can lead to:

• Cost and complexity from an over-cleared tenancy
• Compliance gaps from an under-cleared tenancy

EPC Group's selection framework helps ensure the right choice.

Microsoft 365 GCC (Government Community Cloud) is designed for various government entities. It has FedRAMP Moderate authorization and CJIS coverage. This makes it suitable for:

• Federal civilian agencies handling CUI Basic
• State and local government agencies
• Public safety and law enforcement (CJIS)
• Federally-regulated entities not subject to ITAR

This lower-cost option is appropriate for most federal civilian, state, and local workloads.

Microsoft 365 GCC High is a service that has FedRAMP High authorization and DoD IL4 accreditation. It is specifically designed for managing ITAR and EAR-controlled data. This service is crucial for contractors in the Defense Industrial Base who handle:

• Controlled unclassified information
• Defense-related data
• Compliance with federal regulations

• Controlled unclassified information
• Sensitive data
• Compliance with federal regulations

• CUI Specified data
• ITAR-controlled technical data
• DoD IL4 workloads

GCC High costs more than GCC because it requires extra cleared personnel and sovereignty controls.

EPC Group advises using GCC High for:

• Any DIB prime contractor
• Any DIB sub-tier contractor
• Organizations that manage DoD program data

Azure Government. FedRAMP High + DoD IL4 + IL5 (IL5 for specific Azure services in specific regions). Used for IaaS + PaaS + analytics workloads at higher classification. Pairs with M365 GCC High for the productivity layer. Deployed within a Microsoft Cloud Adoption Framework (CAF)-aligned Azure landing zone architecture with FedRAMP-mapped management groups, Policy guardrails, and hub-spoke networking.

Azure Government Secret + Top Secret. DoD IL6 + classified workloads. Air-gapped sovereign clouds for IC + DoD secret + top-secret programs. Engagement-specific implementation patterns.

EPC Group has shipped tenant selection + migration + greenfield deployment across all four sovereign environments.

Zero Trust Architecture — OMB M-22-09 Implementation

The Federal Zero Trust Strategy (OMB M-22-09) details a 5-pillar approach for implementation. These pillars are:

• Identity
• Devices
• Networks
• Applications and Workloads
• Data

This strategy includes required milestones for federal civilian agencies.

EPC Group's Zero Trust reference architecture aligns the M-22-09 pillars with Microsoft products:

• Identity
• Devices
• Networks
• Applications and Workloads
• Data

Identity pillar. Microsoft Entra ID, Conditional Access, Privileged Identity Management, Identity Governance, and Entra Verified ID enhance security. They offer phishing-resistant MFA using FIDO2 and PIV/CAC for all users, including privileged and general users. This system ensures ongoing identity-based authorization.

Devices pillar. Microsoft Intune + Microsoft Defender for Endpoint + Microsoft Defender for IoT. Comprehensive device inventory, configuration baseline, compliance enforcement, EDR / XDR posture.

Networks pillar. Azure Firewall + Azure Front Door + Azure ExpressRoute + Microsoft Entra Internet Access + Microsoft Entra Private Access. Encrypted-everywhere transit (TLS 1.3). Network microsegmentation.

Applications + Workloads pillar. Microsoft Defender for Cloud + Microsoft Defender for Cloud Apps. Continuous monitoring of applications + workloads. Cloud Security Posture Management (CSPM). Cloud Workload Protection Platform (CWPP).

Data pillar. Microsoft Purview Information Protection + Microsoft Purview Data Loss Prevention + Microsoft Purview Insider Risk Management + Microsoft Purview Audit. Data classification, encryption, DLP, insider risk monitoring, immutable audit trail.

EPC Group's Zero Trust engagements map every M-22-09 milestone to specific Microsoft capability + deployment evidence + auditor-ready documentation.

CMMC 2.0 Implementation for DIB Contractors

The CMMC 2.0 final rule, set for December 2024, reorganizes the original CMMC into three levels:

• Level 1 (Foundational): 17 NIST SP 800-171 Rev 2 practices, self-assessment.
• Level 2 (Advanced): 110 NIST SP 800-171 Rev 2 practices, C3PAO assessment for prioritized acquisitions, self-assessment for non-prioritized.
• Level 3 (Expert): 110 + ~24 additional NIST SP 800-172 practices, DIBCAC assessment.

EPC Group's CMMC implementation pattern for Microsoft 365 GCC High + Azure Government:

Access Control (AC) family. Microsoft Entra ID + Conditional Access + Privileged Identity Management. Documented per AC-1 through AC-22 controls with evidence packs.

Audit and Accountability (AU) family. Microsoft Purview Audit Premium + Microsoft Sentinel. Documented per AU-1 through AU-12 with evidence retention.

Configuration Management (CM) family. Microsoft Intune + Microsoft Defender for Endpoint + Microsoft Defender for Cloud. Documented baseline + change control evidence.

Identification and Authentication (IA) family. Entra ID + PIV / CAC + FIDO2 phishing-resistant authentication. Documented per IA-1 through IA-11.

Incident Response (IR) family. Sentinel SOAR runbooks + documented IR plan + tested IR procedures.

System and Communications Protection (SC) family. Microsoft Purview Information Protection + Azure Encryption + Microsoft 365 encrypted transport. Documented evidence per SC-1 through SC-39.

EPC Group offers CMMC engagements that typically last from 16 to 32 weeks. These engagements aim to prepare clients for:

• C3PAO assessment readiness at Level 2
• DIBCAC assessment readiness at Level 3

Each engagement includes:

• Documented System Security Plan (SSP)
• Plan of Action and Milestones (POA&M)
• Continuous monitoring strategy

Microsoft 365 Copilot in GCC + GCC High

Microsoft 365 Copilot in Government Community Cloud (GCC) and GCC High is the AI productivity tool essential for government and Defense Industrial Base (DIB) workloads. EPC Group's deployment pattern for GCC and GCC High Copilot includes specific controls for federal and DIB needs. These controls improve the governance framework of the commercial Copilot:

• Enhanced security measures
• Compliance with federal regulations
• Tailored support for DIB operations

• Federal compliance requirements
• DIB-specific security measures
• Custom governance policies

Sovereignty controls. Customer Key + Double Key Encryption for the highest-sensitivity data. Tenant-managed key control. Microsoft Cloud for Sovereignty overlays (where applicable) for additional regulatory transparency.

CUI handling. Microsoft Purview provides sensitivity labels for two types of Controlled Unclassified Information (CUI): CUI Basic and CUI Specified. Data Loss Prevention (DLP) for Copilot helps stop CUI from being exposed outside of approved contexts.

Moreover, Restricted SharePoint Search ensures that CUI sites do not show up in Copilot.

Program / contract segmentation. Information Barriers per program + per contract. Critical for DIB primes operating multiple programs with different cleared-personnel populations + different need-to-know requirements.

Communication Compliance. Scanning Copilot prompts + responses for CUI exposure, classified information disclosure, export-control violations, contract-restricted information sharing.

Audit + accountability. Purview Audit Premium with retention configured per agency / program requirements. Audit log export for cyber incident reporting + congressional inquiries + IG investigations.

Documented at the federal blueprint level in EPC Group's Microsoft Sentinel FedRAMP High + IL5 Enterprise Blueprint at /blog/microsoft-sentinel-fedramp-high-il5-enterprise-blueprint-2026.

FOIA + Federal Records + State Public Records

Records management and handling public records requests are important tasks for government agencies. The Federal Records Act (44 USC) and state public records laws provide specific rules. These laws vary by state and outline requirements for retention and production.

Microsoft offers an integrated records management platform that includes:

• Microsoft Purview
• SharePoint Online
• Microsoft 365

Records identification + classification. Microsoft Purview Information Protection sensitivity labels for record-quality content. Auto-labeling based on content type + location + sensitivity.

Records retention. Microsoft Purview Data Lifecycle Management retention policies + retention labels configured per agency records schedule (NARA-approved at federal level, state-records-schedule at state level).

Records storage. SharePoint Online records center configured per agency information architecture. Immutable record-quality storage with audit trail. Compliance + records dashboards (FOIA queue, retention disposition queue, classification breakdown) typically delivered as SharePoint dashboards using the design patterns we've standardized.

Records production. Microsoft Purview eDiscovery Premium for FOIA + public records request response. Pre-defined custodian + keyword searches. Audit-quality export. Tamper-evident metadata.

Records disposition. Microsoft Purview disposition review workflows for end-of-lifecycle records. Documented disposition decisions with audit trail.

Microsoft Sentinel — Federal SOC Reference Architecture

Microsoft Sentinel deployed in Azure Government provides the FedRAMP High + DoD IL4 / IL5 + CJIS-compliant SIEM platform. EPC Group's federal Sentinel reference architecture:

Data ingestion. We provide connectors to various sources, including:

• Microsoft 365 (UAL, Entra ID, Defender XDR, Purview)
• Azure Government services
• Third-party security tools (firewalls, IDS/IPS, identity providers)
• Endpoint telemetry
• Network telemetry
• Application logs
• Custom log sources

We also document the data flow for each source.

Analytics rules. We offer over 50 federal-tuned analytics rules. These rules focus on:

• ZTA Maturity Model detections
• CISA Known Exploited Vulnerabilities patterns
• MITRE ATT&CK coverage
• NIST 800-53 control monitoring
• Insider threat detection
• Business Email Compromise (BEC) and credential theft
• Ransomware staging behaviors

SOAR runbooks. Documented + tested incident response automation for the agency's IR plan. Integration with TIPs / threat intelligence platforms. Coordination with US-CERT / CISA + DC3 / DCISE incident reporting workflows.

UEBA. Microsoft Sentinel UEBA for behavioral anomaly detection covering privileged + general user populations. Insider risk integration with Microsoft Purview Insider Risk Management.

Operational integration. Federal-cleared SOC analyst access. ServiceNow + Remedy / IR ticketing integration. Documented escalation procedures + congressional notification workflows where applicable.

State + Local + Public Safety

State + local + tribal government workloads benefit from Microsoft 365 GCC + Azure Government with workload-specific patterns:

Public safety + CJIS. M365 GCC + Azure Government with CJIS-compliant configuration. Microsoft Cloud for Sovereignty overlays where applicable. Integration with CAD / RMS / mobile data computer systems.

Case management. Dynamics 365 + Power Platform for child welfare, adult protective services, family + civil court, juvenile justice, behavioral health case management. SharePoint + Purview for case file records management.

Constituent engagement. Power Pages + Microsoft Bookings + Dynamics 365 Customer Service for constituent service portals, appointment scheduling, case status, public records requests.

K-12 + higher ed. Microsoft 365 EDU + Intune for Education + Microsoft Teams for Education. FERPA + COPPA + state student data privacy law alignment.

Public health. M365 GCC + Microsoft Fabric for population health, communicable disease surveillance, public health emergency response. Integration with CDC / state public health systems.

Engagement Operating Model — Federal + DIB Application

The 7-phase Engagement Operating Model (at /engagement-model) applied to federal + DIB engagements:

Discover. We provide a comprehensive inventory of:

• Agency and contractor ATO inventory
• FedRAMP authorization inventory
• Zero Trust maturity assessment based on OMB M-22-09 pillars
• CMMC posture assessment (DIB only)
• Current Microsoft tenant inventory
• Contract and program inventory with cleared personnel and need-to-know maps

Architect. We focus on several key areas to ensure effective governance and compliance:

• Sovereign tenant selection (GCC vs GCC High vs Azure Government)
• ZTA reference architecture
• CMMC implementation pattern (DIB)
• Copilot governance design with sovereignty controls
• Sentinel + Defender SOC architecture
• Records management architecture
• FOIA / public records response architecture

Plan. Phased rollout with explicit ATO + cyber milestone alignment. Change management for cleared-personnel + congressional + IG / OIG stakeholders where applicable.

Build. We focus on several key areas to enhance your enterprise's capabilities:

• Sovereign tenant configuration
• ZTA implementation per OMB M-22-09 milestones
• CMMC control implementation with evidence packs
• Copilot deployment in GCC + GCC High
• Sentinel + Defender SOC build
• Records management implementation
• FOIA / public records workflow build

Validate. We prepare ATO documentation and evidence for FedRAMP continuous monitoring. We also conduct CMMC pre-assessments (DIB) and create ZTA milestone documentation for OMB reporting.

Our services include:

• Penetration testing, including red-team engagement where applicable
• Agency-specific compliance validation

Deploy. Production cutover with hypercare. ATO sponsor coordination. Cyber incident response readiness validation. DIBCAC / C3PAO assessment scheduling (DIB CMMC L3 / L2).

Run. Managed Microsoft Support with cleared-personnel options. FedRAMP continuous monitoring. CMMC continuous monitoring. Quarterly ZTA milestone reviews. Annual ATO recertification support.

Engagement Investment

EPC Group government engagement tiers:

Foundation (fixed-fee, 16-24 weeks): This phase includes one of the following implementations:

• GCC or GCC High deployment
• CMMC L2 implementation
• Sentinel FedRAMP High implementation
• ZTA pillar implementation

This option is suitable for a single sub-agency or a single-contract DIB sub-tier.

Enterprise (fixed-fee, 28-44 weeks): Multi-workload deployment + Engagement Operating Model full lifecycle + Managed Microsoft Support. Suitable for federal civilian agency / DIB prime / mid-size state government.

Platform (fixed-fee, 48-72 weeks): This solution is designed for:

• Enterprise and multi-tenant environments
• Multi-classification needs
• Center of Excellence support
• ATO support across multiple boundaries
• DIBCAC L3 readiness

It is suitable for cabinet-level federal departments, large DIB primes, and large state governments.

Ongoing operations via /managed-microsoft-support-tiers — 24x7x365 tier with cleared-personnel options for sovereign workloads.