PreVeil for International Defense Suppliers: The Practical Path to CMMC, DFARS, and ITAR Compliance

International suppliers are indispensable to the US defense supply chain. They are also confronted with a compliance problem that the most prominent US-market solution cannot solve. Standards such as DFARS (Defense Federal Acquisition Regulation Supplement), CMMC (Cybersecurity Maturity Model Certification), and ITAR (International Traffic in Arms Regulations) impose rigorous requirements on the handling of Controlled Unclassified Information (CUI) and technical data. Microsoft GCC High — widely adopted among large US defense enterprises — requires organizations to migrate their entire IT environment to US Government sovereign cloud. For international suppliers, this is fundamentally incompatible with their operational realities: not because storing CUI on US sovereign cloud is objectionable (CUI is subject to US regulations and belongs there), but because GCC High forces all corporate data onto US Government infrastructure — including data that has nothing to do with US defense programs.

PreVeil resolves this impasse. By functioning as an end-to-end encrypted overlay on existing IT infrastructure, PreVeil stores only CUI on AWS GovCloud — fully encrypted so that neither PreVeil, Amazon, nor any other entity can access it — while leaving the rest of the organization’s data exactly where it is. Its Compliance Accelerator then guides organizations through certification with assessment-ready documentation, video tutorials, and expert support — saving over $100,000 in documentation costs and compressing the compliance timeline to four to six months. There is no migration, no replacement of existing systems, and no disruption to workflows between defense and non-defense business units. Over 2,500 defense contractors — including international suppliers — use PreVeil today, and more than 60 have achieved CMMC certification with the platform.

What International Suppliers Must Meet

International companies participating in the US defense supply chain face three overlapping regulatory requirements:

DFARS 252.204-7012 and CMMC Level 2. These require CUI to be stored and shared in accordance with the 110 security controls specified in NIST SP 800-171. Cloud service providers used to process or store CUI must meet FedRAMP Moderate Baseline Equivalent standards. Encryption must be FIPS 140-2 or 140-3 validated. CMMC Level 2 certification, now being enforced through a phased rollout, requires a third-party assessment by an authorized C3PAO (Certified Third-Party Assessment Organization).

ITAR (22 CFR Part 120–130). ITAR restricts access to defense articles and technical data to US persons. However, under ITAR §120.54, end-to-end encrypted cloud storage is permitted without requiring US-sovereign infrastructure, provided that the encryption is end-to-end (no access by the cloud provider or any intermediary), the supplier retains exclusive control of decryption keys, and no unencrypted technical data is accessible to non-US persons (including the cloud provider).

DFARS 252.204-7020 and 7021 (CMMC Flow down). Prime contractors must flow down CUI protection requirements to subcontractors at all tiers. International suppliers often sit in this flow-down chain and must demonstrate equivalent compliance.

Joint Certification Program (JCP). The JCP, managed by the Defense Logistics Agency, is a U.S.-Canadian partnership that provides defense contractors in both countries with access to unclassified, export-controlled military technical data. JCP applicants and renewals must now document a NIST 800-171 self-assessment in SPRS, aligned with DFARS and CMMC obligations.

For large US defense enterprises with dedicated IT teams and predominantly defense-focused operations, Microsoft GCC High (Government Community Cloud – High) is a well-established compliance solution. It is far less suited to small and mid-sized enterprises, and to companies with mixed defense and commercial business — precisely the profile of most international defense suppliers. The reasons are structural.

1. GCC High May Be Unavailable

Microsoft GCC High is a US Government sovereign cloud environment. Its availability to international organizations is limited and, in many cases, nonexistent. An international entity may simply be unable to procure GCC High tenancy, rendering the entire approach moot at the outset.

2. Forced Migration of All Data to US Sovereign Cloud

GCC High is not a selective tool. It requires the entire organization’s Microsoft environment — email, file storage, collaboration tools, and associated data — to be hosted on US Government Cloud infrastructure. An international supplier cannot migrate only its CUI-bearing data to GCC High while retaining the rest on local or commercial cloud infrastructure.

This is the crux of the problem. Storing CUI on US sovereign cloud is entirely appropriate — CUI is subject to US regulations and belongs there. But GCC High does not distinguish between CUI and non-CUI data. An international company would be required to host all of its corporate data — including data related to purely domestic, non-US-defense projects, commercial contracts, and allied-nation programs — on US Government servers. For most international organizations, this is a non-starter.

3. Conflict with Local Data Sovereignty Laws

Most countries impose data localization or data sovereignty requirements mandating that certain categories of data be stored within national borders or within approved jurisdictions. Because GCC High forces all corporate data — not just CUI — onto US Government Cloud infrastructure, it will in many cases directly violate these local laws. The international supplier is placed in an impossible position: comply with US defense regulations by moving non-defense data offshore in violation of domestic law, or comply with domestic law by forgoing US defense contracts. This conflict would not arise if only CUI were stored on US sovereign cloud — but GCC High does not offer that option.

4. Workflow Disruption Between Defense and Non-Defense Business Units

In most international organizations, only a subset of personnel work on US defense contracts. The rest of the company operates on commercial, domestic government, or allied-nation defense programs. GCC High is architecturally designed to restrict communication between GCC High tenants and commercial Microsoft 365 tenants. If the defense-focused enclave of an international company migrates to GCC High, those employees will face significant barriers to routine communication and collaboration with colleagues in the non-defense part of the same organization. Email flows, shared calendars, Teams collaboration, and document sharing between the two environments become constrained. Day-to-day business workflows are materially disrupted.

5. Prohibitive Cost and Complexity

Even where technically feasible, GCC High migration is expensive. The migration itself — covering email history, file repositories, user configurations, and application integrations — typically exceeds $100,000 in professional services fees alone. Per-user license costs are also significantly higher than commercial tiers. And because GCC High provides no compliance documentation, organizations must separately invest in developing their own SSPs, SOPs, and assessment materials — a process the DoD estimates at $150,000. The total cost of a GCC High compliance path can easily exceed $250,000 before ongoing license fees. For an international organization that may have only a small team working on US defense contracts, the cost-per-user economics are untenable.

In summary: The problem with GCC High for international suppliers is not that CUI is stored on US sovereign cloud — that is appropriate and necessary. The problem is that GCC High is indiscriminate, forcing all corporate data onto US Government infrastructure. For international organizations, the resulting combination of limited availability, conflict with local data sovereignty regimes, workflow disruption, and disproportionate cost makes GCC High untenable.

PreVeil takes a fundamentally different architectural approach. Rather than replacing an organization’s IT environment, PreVeil operates as an encrypted overlay on the existing infrastructure.

The Overlay Architecture

PreVeil adds end-to-end encrypted email and file sharing capabilities on top of the organization’s current Microsoft 365, Exchange, or Google Workspace environment. The key characteristics:

Same email address, separate secure channel. PreVeil Email creates a second, encrypted inbox alongside the user’s existing email client (Outlook, Apple Mail, or Gmail). CUI-bearing communications are sent and received through this encrypted channel. The user’s email address does not change. Non-defense email continues to flow through the existing commercial system exactly as before.

Encrypted file storage integrated into the existing file system. PreVeil Drive appears as a standard folder in the user’s PC, Mac, or Linux file system. Files containing CUI are stored in PreVeil Drive, where they are encrypted end-to-end and synced to AWS GovCloud. The user’s existing file system, OneDrive, SharePoint, or Google Drive remains untouched for non-CUI work.

No migration, no replacement. The existing IT environment remains in place. No email history migration. No reconfiguration of commercial Microsoft or Google tenancy. No disruption to any workflows outside the CUI enclave.

Why This Architecture Resolves Each of the Five Problems

ITAR compliance is a particular concern for international suppliers handling defense technical data. The conventional interpretation requires that ITAR-controlled data be accessible only to US persons — a requirement that seemingly mandates US-sovereign infrastructure.

PreVeil addresses ITAR through the §120.54 end-to-end encryption carveout. Under this provision, sending, storing, or transferring ITAR-controlled technical data via an encrypted cloud service does not constitute an “export” provided that:

• The data is encrypted end-to-end using FIPS 140-3 validated cryptographic modules.
• The encryption key management is performed exclusively by the data owner (not the cloud provider).
• No unencrypted data is accessible to the cloud provider, any intermediary, or any non-US person.

PreVeil meets all three conditions. Data stored in PreVeil Email and Drive is encrypted on the sender’s device before transmission and can only be decrypted by authorized recipients. PreVeil operates on a zero-knowledge architecture: PreVeil itself has no access to customer data. Amazon, as the cloud infrastructure provider, stores only encrypted ciphertext.

This means an international supplier can store and share ITAR-controlled technical data using PreVeil without that storage constituting an export — a result that cannot be achieved with standard commercial cloud services that retain server-side access to plaintext data.

DFARS and CMMC require that CUI protection obligations flow down through the supply chain. International suppliers who receive CUI from US primes must, in turn, ensure that their own subcontractors handle CUI compliantly.

PreVeil addresses this through its freemium model. Any external party — a subcontractor, a supplier, a partner — can create a free PreVeil Express account and immediately begin exchanging encrypted email and files with the organization. There is no license cost for these external collaborators. This dramatically reduces the friction and cost of supply-chain-wide compliance, a particular advantage for international suppliers who may have extensive subcontractor networks spanning multiple countries.

By contrast, GCC High requires expensive guest licenses for external collaborators, creating a cost barrier at every node in the supply chain.

PreVeil is purpose-built for enclave deployments — the operating model that most international suppliers need. In an enclave deployment:

• Only the personnel handling US defense CUI use PreVeil.
• The rest of the organization continues to operate on existing commercial IT systems without any change.
• Defense personnel retain full access to both systems: PreVeil for CUI, existing tools for everything else.
• There is no architectural barrier between defense and non-defense personnel for non-CUI communication.

This is precisely the model that GCC High’s architecture makes difficult or impossible to achieve.

	GCC High	PreVeil
Deployment time	Months (migration project)	Hours to days
Migration required	Full IT environment	None
License scope	Enterprise-wide	CUI-handling users only
External collaboration	Paid guest licenses	Free PreVeil express accounts
Compliance documentation	Self-developed no documentation provided	Compliance Accelerator: assessment-ready, C3PAO-validated documentation covering all 320 objectives, video tutorials, and 1×1 expert support — saving over $100,000
Typical cost for SMB	$250,000+ (migration, licenses, and documentation combined)	Up to 77% less than GCC High
Ongoing IT complexity	High (dual-environment management)	Low (overlay on existing systems)