Salesforce Government Cloud vs Microsoft Dynamics 365 GCC High vs Purpose-Built CUI-Safe CRM for Defense Contractors
Defense contractors choosing a CRM platform in 2026 face a problem that did not exist five years ago. CMMC 2.0 Phase 2 enforcement begins in November 2026, and every system that processes, stores, or transmits Controlled Unclassified Information (CUI) must satisfy the 110 controls in NIST SP 800-171 Rev 2. Your CRM is one of those systems. Contact records for DoD program managers, opportunity data with contract numbers and CAGE codes, proposal artifacts, and email threads logged automatically from defense programs all constitute CUI that your C3PAO assessor will evaluate. The question is not whether your CRM needs to be compliant -- it is which CRM architecture can actually get you there before the enforcement deadline, at a cost your business can sustain.
Three categories of CRM dominate this conversation: Salesforce Government Cloud (with its GCC, GCC+, and Shield tiers), Microsoft Dynamics 365 GCC High, and purpose-built CUI-safe CRM platforms designed from the ground up for defense contractor workflows. Each comes with fundamentally different architectural assumptions, compliance postures, cost structures, and migration realities. This comparison cuts through the vendor marketing to give you the technical and operational facts you need to make a decision -- grounded in the actual CMMC controls, FedRAMP authorization boundaries, and CUI handling requirements that your assessor will verify.
For the full architectural context of what a CUI-safe CRM requires, start with our comprehensive CUI-safe CRM guide.
---
---
Why This Comparison Matters Now
The compliance landscape for defense contractors has shifted from voluntary self-attestation to mandatory third-party assessment with contract consequences. Three converging forces make your CRM platform decision urgent.
CMMC 2.0 Phase 2: November 2026 Enforcement
CMMC 2.0 Phase 2 requires defense contractors handling CUI to pass a Level 2 assessment conducted by a Certified Third-Party Assessment Organization (C3PAO). This is not a self-assessment. The C3PAO will examine your system security plan (SSP), test your controls in practice, and issue a certification that becomes a condition of contract award. Contractors without valid certification will be ineligible for new DoD contracts that include DFARS 252.204-7012 clauses -- which includes the vast majority of contracts involving CUI.
Your CRM is in scope. Every contact record linked to a defense program, every opportunity containing a contract number, every email thread auto-logged from a .mil address, and every proposal artifact attached to a deal record is CUI that your assessor will evaluate against all 110 NIST 800-171 controls. For a detailed breakdown of these requirements, see our CMMC compliance guide.
DFARS 7012 Flowing Down to Subcontractors
DFARS 7012 requirements flow down to every subcontractor in the supply chain that handles CUI. If you are a Tier 2 or Tier 3 subcontractor, your prime contractor is increasingly requiring evidence of CMMC-ready systems as a condition of teaming agreements. This means even small defense contractors with 20-50 employees need CRM platforms that can satisfy these requirements -- not just the large primes that can afford six-figure annual CRM licenses. Understanding how these requirements interact with your broader compliance obligations is essential, and our FAR/DFARS guide for defense contractors provides that foundation.
The False Security of "Government Cloud" Branding
Both Salesforce and Microsoft market "Government Cloud" products, creating the impression that purchasing a government edition automatically satisfies CMMC requirements. This is misleading. FedRAMP authorization (which both products have at various levels) certifies the cloud service provider's infrastructure controls. It does not certify that your specific configuration, your data handling practices, or your application-layer security satisfies the 110 NIST 800-171 controls. The distinction between infrastructure authorization and application-level compliance is where most defense contractors get into trouble -- and where assessors focus their evaluation.
---
Salesforce Government Cloud: Deep Dive
Salesforce offers multiple government-oriented products, and the naming creates genuine confusion. Understanding the differences between GCC, GCC+, and Shield is essential before evaluating compliance posture.
Salesforce Government Cloud Editions
Salesforce Government Cloud (GCC) is Salesforce's primary government offering. It runs on dedicated infrastructure within US-based data centers, operated by US persons, and holds FedRAMP Moderate authorization (previously called FedRAMP Joint Authorization Board P-ATO at Moderate). GCC supports Sales Cloud, Service Cloud, and several other Salesforce products. This is the edition most commonly marketed to government agencies and their contractors.
Salesforce Government Cloud Plus (GCC+) is a higher-security tier that Salesforce has been developing to achieve FedRAMP High authorization. GCC+ is designed for workloads requiring Impact Level 4 (IL-4) and higher classifications. As of early 2026, GCC+ availability is limited, primarily targeted at large federal agencies and prime contractors with significant contract volumes. Access typically requires direct engagement with Salesforce's public sector sales team and often involves minimum user commitments of 100+ seats.
Salesforce Shield is not a separate cloud environment. It is an add-on package for commercial Salesforce that provides platform encryption, event monitoring, and field audit trail capabilities. Shield runs on Salesforce's commercial multi-tenant infrastructure and does not carry independent FedRAMP authorization. Some consultants recommend Shield as a CUI protection mechanism, but it does not change the underlying infrastructure authorization level.
FedRAMP Authorization and CUI Implications
The FedRAMP authorization level determines what categories of federal data a cloud service can process:
- FedRAMP Moderate (Salesforce GCC): Adequate for data where the loss of confidentiality, integrity, or availability would have a "serious adverse effect." This covers many federal data types but falls short of what DoD requires for CUI in many interpretations.
- FedRAMP High (Salesforce GCC+, in progress): Required for data where loss would have "severe or catastrophic adverse effects." This is the authorization level the DoD generally requires for CUI processing on cloud infrastructure, as codified in DoD Cloud Computing SRG Impact Level 4 and 5 requirements.
The critical nuance: Salesforce GCC at FedRAMP Moderate may not satisfy the infrastructure requirements your C3PAO assessor expects for a system processing CUI. While NIST 800-171 does not explicitly mandate FedRAMP High for all CUI systems, the DoD's Cloud Computing SRG and the growing assessor consensus treat FedRAMP High (or equivalent) as the minimum for CUI workloads. Contractors relying on GCC (Moderate) for CUI should anticipate assessor scrutiny and prepare compensating controls documentation.
CUI Handling Limitations in Salesforce GCC
Even at the GCC or GCC+ level, Salesforce's architecture presents CUI handling challenges that stem from its commercial design heritage:
Multi-tenant database architecture: GCC runs on dedicated government infrastructure, but the application layer still operates on Salesforce's multi-tenant model. Your data shares database instances with other government tenants. Logical separation exists at the application layer, but the physical isolation that some NIST 800-171 controls imply (particularly SC-7, Boundary Protection, and SC-4, Information in Shared Resources) requires compensating controls documentation.
Coarse-grained access control: Salesforce's permission model (profiles, permission sets, sharing rules, and record-level security) is powerful but was designed for sales team productivity, not CUI compartmentalization. Implementing field-level CUI access control -- where one field on a contact record is CUI and another is not -- requires complex configurations using Shield Platform Encryption and custom sharing rules that are fragile, difficult to audit, and easy to misconfigure.
Audit trail gaps: Standard Salesforce audit trails capture login events, record modifications, and some field changes. However, they do not capture read access at the field level by default. Shield's Field Audit Trail add-on expands this, but it adds cost ($25+/user/month on top of GCC licensing) and still does not provide the immutable, tamper-proof audit logs that NIST 800-171 control 3.3.8 requires without additional configuration. See our CMMC-compliant CRM checklist for the 25 specific audit and access control requirements your assessor will evaluate.
Email integration CUI exposure: Salesforce's Einstein Activity Capture and Email-to-Salesforce features automatically log email communications to contact and opportunity records. In a defense contracting context, emails from .mil addresses or containing controlled program references introduce CUI into the CRM through a channel that most contractors never explicitly secure. Every auto-logged email becomes a CUI artifact in your assessment boundary.
AppExchange and integration risks: Salesforce's ecosystem strength -- its vast AppExchange marketplace and API integrations -- becomes a compliance liability in a CUI context. Every connected application, every API integration, and every managed package installed in your org extends your CMMC assessment boundary. Many AppExchange packages run on commercial (not GCC) infrastructure, creating data flow paths that exit the government authorization boundary.
Salesforce GCC Cost Structure
Salesforce does not publish GCC pricing publicly. Based on current market data and disclosed contract values:
| Salesforce Edition | Approximate Cost/User/Month | Notes |
|---|
| Sales Cloud (commercial) | $75-$165 | Enterprise to Unlimited editions |
| GCC Sales Cloud | $175-$250 | Minimum seat commitments typical |
| GCC+ Sales Cloud | $250-$330+ | Limited availability, 100+ seat minimums |
| Shield (add-on) | $25-$50 | Platform Encryption + Event Monitoring + Field Audit Trail |
| GCC + Shield combined | $200-$300 | Common configuration for CUI-aspirant orgs |
For a 50-user defense contractor, Salesforce GCC with Shield runs approximately $10,000-$15,000/month ($120,000-$180,000/year) before implementation, customization, or integration costs. GCC+ pushes that to $150,000-$200,000+ annually for licensing alone.
CMMC Control Coverage Gaps
Despite the substantial investment, Salesforce GCC leaves measurable gaps in CMMC control coverage that require compensating controls or third-party solutions:
- 3.1.3 (Control CUI flow): Salesforce's data flow mechanisms (sharing rules, API access, reports, dashboards) do not natively enforce CUI boundary controls. Data can flow between CUI and non-CUI contexts within the same org without architectural barriers.
- 3.1.22 (Control publicly accessible information): Public-facing Salesforce portals (Communities/Experience Cloud) that share infrastructure with CUI data require careful architectural separation that the platform does not enforce by default.
- 3.3.8 (Protect audit information): Standard audit logs are mutable by system administrators. Shield adds retention but not true immutability. External SIEM integration is typically required.
- 3.13.4 (Separate CUI from non-CUI): The multi-tenant architecture makes physical separation impossible. Logical separation requires extensive custom development.
- 3.13.16 (Protect CUI at rest): Shield Platform Encryption provides field-level encryption, but not all standard objects and fields support it. Custom objects require explicit encryption enablement, and encrypted fields have functional limitations (no formula fields, limited reporting).
---
Microsoft Dynamics 365 GCC High: Deep Dive
Microsoft's government cloud strategy differs fundamentally from Salesforce's. Dynamics 365 GCC High runs on a physically separate Azure Government infrastructure operated exclusively by screened US persons, and it carries FedRAMP High authorization. This gives it a stronger infrastructure compliance posture out of the box -- but the application-layer challenges remain significant.
GCC High Architecture and Authorization
Dynamics 365 GCC High operates within Microsoft's Azure Government High cloud, which is a physically isolated set of data centers separate from both commercial Azure and the standard Azure Government (GCC) infrastructure. This environment meets:
- FedRAMP High authorization (Joint Authorization Board P-ATO)
- DoD Impact Level 4 and 5 (IL-4/IL-5) requirements per the DoD Cloud Computing SRG
- ITAR (International Traffic in Arms Regulations) compliance for export-controlled data
The physical isolation is a genuine architectural advantage. Unlike Salesforce GCC's logical separation within shared government infrastructure, GCC High runs on hardware that is not shared with commercial or standard government tenants. For defense contractors, this means the infrastructure layer of your CMMC assessment boundary has a cleaner story -- you can point to FedRAMP High authorization and IL-5 compliance as evidence that the underlying infrastructure satisfies the Systems and Communications Protection (SC) control family requirements.
What GCC High Includes
GCC High provides access to Dynamics 365 Sales, Customer Service, Field Service, and other modules -- but not all commercial Dynamics 365 features are available. Key inclusions and limitations:
Available: Core CRM (Sales, Customer Service), Power Platform (with restrictions), Exchange Online (GCC High), SharePoint Online (GCC High), Teams (GCC High). The integrated Microsoft 365 GCC High ecosystem means email, document storage, collaboration, and CRM operate within the same authorization boundary.
Limited or unavailable: Some Dynamics 365 AI features, certain Power Automate connectors, third-party AppSource marketplace apps, LinkedIn Sales Navigator integration, and some advanced analytics capabilities. The feature gap between commercial Dynamics 365 and GCC High has narrowed over the past two years but remains meaningful.
Ecosystem advantage: If your organization already runs Microsoft 365 GCC High for email and document management, adding Dynamics 365 GCC High keeps your CRM within the same authorization boundary. This is the strongest argument for GCC High -- the unified boundary reduces the integration points that an assessor must evaluate. All data stays within Azure Government High infrastructure, eliminating the cross-boundary data flow concerns that plague Salesforce GCC + commercial integration scenarios.
Migration Complexity: 12-18 Months Is Real
The most commonly underestimated aspect of Dynamics 365 GCC High is the migration from commercial Dynamics 365 or from non-Microsoft CRMs. The timeline is not a vendor scare tactic -- it reflects genuine technical and administrative requirements:
Tenant migration (3-4 months): Moving from a commercial Microsoft 365 tenant to a GCC High tenant is not a "flip the switch" operation. GCC High requires a separate Azure Active Directory (now Entra ID) tenant. Every user identity, group membership, conditional access policy, and app registration must be recreated in the GCC High tenant. Data migration between tenant types requires Microsoft engagement and follows a structured process with limited automation.
Data migration (2-4 months): CRM data -- contacts, accounts, opportunities, activities, custom entities, relationships, attachments -- must be extracted from the commercial environment, transformed to match any schema changes, and loaded into the GCC High instance. Data volumes, custom entity complexity, and relationship integrity checks drive the timeline.
Integration rebuilding (3-6 months): Every integration between your commercial Dynamics instance and other systems (ERP, proposal management, contract management, email, telephony) must be rebuilt to connect to the GCC High endpoints. Many commercial connectors do not support GCC High, requiring custom development.