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7 FedRAMP‑Authorized Cloud Platforms for Storing CUI

by Danielle Barbour updated February 13, 2026 CMMC Compliance

Reading Time: 8 minutes

Government agencies face significant security and compliance risks when managing controlled unclassified information (CUI). As they handle sensitive data, cyberattacks and inadequate content governance can lead to data breaches and unauthorized access. Compliance risks are also a concern, particularly with regulations such as NIST 800-171 and ITAR. To address these challenges, agencies can benefit from FedRAMP-authorized cloud platforms that provide secure, compliant data storage and sharing solutions.

Agencies and DIB contractors reading this post will learn how FedRAMP‑authorized platforms mitigate risk, accelerate compliance, and strengthen resilience across the supply chain. You’ll get a concise comparison of leading solutions, guidance on deployment choices that impact authorization and control inheritance, and a summary of how a unified Private Data Network approach simplifies governance. The result: faster audits, fewer silos, and stronger protection for CUI.

Table of Contents

Executive Summary

Main idea: FedRAMP‑authorized cloud platforms enable secure, compliant storage and sharing of Controlled Unclassified Information (CUI) while aligning with CMMC and broader federal requirements.
Why you should care: The right platform reduces cyber risk, preserves DoD contracts, accelerates ATOs, and safeguards the Defense Industrial Base (DIB) and national security by protecting sensitive data end‑to‑end.

Key Takeaways

FedRAMP is foundational, not optional. It standardizes security benchmarks for cloud services handling CUI, speeding ATOs and reducing audit friction while aligning with CMMC and NIST 800‑171.
Protecting CUI protects national security. Strong encryption, zero‑trust access, and verifiable auditability help secure the DIB supply chain and reduce the blast radius of breaches.
Deployment choice matters. Government‑specific regions, single‑tenant SaaS, and hybrid options enhance isolation, data sovereignty, and control inheritance for compliance.
Unified governance cuts risk. Centralized policy, DLP, and chain‑of‑custody visibility span files, email, MFT, and APIs to eliminate blind spots.
Kiteworks streamlines compliance. Its Private Data Network unifies content communications with FedRAMP‑authorized controls, CMMC alignment, and hybrid deployment flexibility.

Why FedRAMP‑Authorized Platforms Protect CUI—and the DIB—Beyond Compliance

While FedRAMP compliance is a prerequisite for many government workloads and a practical pathway to CMMC compliance and maintaining DoD contracts, its value extends further. FedRAMP standardizes rigorous control baselines, enabling agencies and contractors to inherit proven security, reduce misconfiguration risk, and streamline continuous monitoring. This hardens defenses around CUI, limits lateral movement, and strengthens incident response with auditable, tamper‑evident logs. In turn, safeguarding CUI fortifies the DIB supply chain and national security by reducing adversaries’ opportunities to exploit sensitive information.

CMMC 2.0 Compliance Roadmap for DoD Contractors

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Vendor	FedRAMP scope/offerings (verify current Marketplace status)	Core strengths for CUI	Deployment options	Encryption at rest/in transit	Zero‑trust access	Audit/chain of custody	Notable integrations
Kiteworks	FedRAMP‑authorized platform	Unified Private Data Network, zero‑trust, chain‑of‑custody	Single‑tenant SaaS, on‑prem, IaaS, hybrid	FIPS‑validated crypto, E2EE	Policy‑driven, granular least privilege	Unified, tamper‑evident logging	SIEM/SOAR, DLP, email, MFT
Microsoft	Azure Government, Microsoft 365 GCC/GCC High/DoD	Broad compliance, identity and threat protection	Government clouds, hybrid	Platform encryption	Conditional access, Defender stack	Extensive logging and compliance center	M365, Azure services
Virtru	Virtru for Government (VFG)	Data‑centric encryption and sharing controls	Gov‑authorized SaaS, integrations	Client‑side/TDF encryption	Attribute‑based access controls	Detailed sharing events	Gmail, Outlook, Drive
PreVeil	Works with FedRAMP‑authorized IaaS	E2EE email/files, CMMC focus	Cloud/desktop/mobile, partner cloud	E2EE by default	Identity‑bound access	Auditable sharing history	O365/Google interop
AWS	AWS GovCloud (US), selected services	High‑assurance IaaS/PaaS, breadth of services	GovCloud regions, hybrid	KMS/HSM, service‑level crypto	Fine‑grained IAM	CloudTrail, Config	Broad ISV ecosystem
DropSecure	Works with FedRAMP‑authorized IaaS	Zero‑knowledge secure file exchange	SaaS, private cloud options	Zero‑knowledge, E2EE	Link‑level controls	Transfer logs	Productivity suites, SSO
Sharetru	Gov‑focused SFTP/MFT offerings	Segmented SFTP/MFT with policy controls	Gov‑ready SaaS, private deployments	Strong TLS/at‑rest	Role‑based controls	Transfer and admin logs	SFTP/MFT tooling
Box	Box for Government	Content governance, collaboration, eDiscovery	FedRAMP‑authorized SaaS	Encryption with KeySafe options	Box Shield policies	Retention, legal holds, audit	Productivity, eDiscovery
FileCloud	Deploys on FedRAMP‑authorized IaaS	Granular sharing, data residency control	Self‑hosted, managed, hybrid	At‑rest/in‑transit, key control	Role/policy controls	Admin and user activity logs	AD/SSO, DLP tools

1. Kiteworks

Kiteworks equips enterprises, government bodies, and regulated organizations with a unified Private Data Network for secure file sharing, secure email, managed transfers, and web forms. This platform supports compliance with NIST standards and ensures sensitive information is protected through end-to-end encryption and zero-trust access controls.

Kiteworks’ strength is unifying all content communications—files, email, SFTP/MFT, APIs—under a single control plane with granular policy, FIPS‑validated cryptography, and tamper‑evident chain‑of‑custody logging. Its FedRAMP‑authorized platform and CMMC alignment help agencies inherit proven controls while maintaining isolation via single‑tenant SaaS or hybrid deployments. Deep integrations with DLP, SIEM/SOAR, and identity systems streamline monitoring, and detailed auditability accelerates ATOs and incident response. The result is reduced risk, fewer silos, and consistent governance across every data exchange.

2. Microsoft

Microsoft Azure Government and Microsoft 365 Government (GCC, GCC High, and DoD) provide dedicated environments engineered to meet stringent U.S. government requirements, including FedRAMP, DoD CC SRG, and CJIS. Advanced identity, access, and threat protection—spanning Entra ID, Conditional Access, and Microsoft Defender—help enforce zero‑trust principles at scale.

Strengths include broad compliance coverage, deep logging and eDiscovery across workloads, and mature data governance tooling in Purview and the Compliance Center. Agencies benefit from seamless productivity with Office, robust key management (including customer‑key options), and hybrid capabilities that respect data residency and sovereignty. These controls, together with strong integration breadth, make Microsoft’s government clouds a versatile backbone for CUI handling.

3. Virtru

Google Cloud’s platform is FedRAMP-authorized, making it suitable for U.S. government use. It offers a variety of secure services and compliance features, including data encryption, access control, and extensive audit trails.

Virtru for Government (VFG) focuses on data‑centric security for email and file sharing using the Trusted Data Format (TDF). Its strengths are simple, user‑friendly client‑side encryption, attribute‑based access controls, and persistent protection that travels with the data. Agencies can revoke access, set expirations, and enforce watermarks without breaking workflows. Native integrations with Gmail, Outlook, and popular storage services enable rapid adoption. Detailed event logs support auditing and compliance, helping organizations protect CUI with minimal change management.

4. PreVeil

IBM Cloud delivers compliance with FedRAMP and other regulations alongside comprehensive data protection capabilities. It features robust security measures like end‑to‑end encryption and is known for its high reliability.

PreVeil provides end‑to‑end encrypted email and file sharing designed for CMMC and NIST 800‑171 alignment. Its strengths are strong cryptography by default, identity‑bound access, and intuitive user experiences within familiar tools (e.g., Outlook and mobile clients). PreVeil’s architecture minimizes attack surface by keeping keys with the organization, helping contain breaches and insider risk. Organizations can deploy alongside FedRAMP‑authorized IaaS to inherit infrastructure controls while leveraging PreVeil’s E2EE to protect CUI throughout collaboration and supply chain workflows.

5. AWS

Amazon Web Services (AWS) offers a dedicated GovCloud region, specifically designed to host sensitive data and regulated workloads, ensuring compliance with U.S. government standards. It features robust security measures, including encryption and granular access controls.

AWS GovCloud (US) delivers broad FedRAMP authorization coverage across IaaS/PaaS with mature identity (IAM), key management (KMS/CloudHSM), and pervasive logging (CloudTrail, Config). Agencies can compose secure architectures using managed services, inherit baseline controls, and apply fine‑grained segmentation. Strengths include scale, breadth of services, and an extensive partner ecosystem for data protection, analytics, and automation. With robust network segmentation, private connectivity, and hybrid tooling, AWS supports resilient, compliant environments for CUI‑centric applications and storage.

6. DropSecure

Oracle Cloud Infrastructure meets FedRAMP requirements and provides government organizations with highly secure storage solutions. Its comprehensive compliance features include automated security controls and reporting capabilities.

DropSecure focuses on zero‑knowledge, end‑to‑end encrypted file exchange and collaboration, making it straightforward to share sensitive data without exposing encryption keys to the service provider. Strengths include secure links with granular controls (expiration, password, view‑only), detailed transfer logging, and ease of adoption across internal and external users. When paired with FedRAMP‑authorized IaaS or government‑specific deployments, DropSecure can help organizations extend secure, compliant file exchange to partners and suppliers handling CUI with minimal friction.

7. Sharetru

Salesforce offers a dedicated Government Cloud approved under FedRAMP, delivering secure public services with compliance and data regulations. It includes features for data encryption, security monitoring, and access governance.

Sharetru (formerly FTP Today) provides government‑focused SFTP/MFT capabilities with segmented environments, granular permissions, and detailed transfer auditing. Its strengths are policy‑controlled external file exchange, IP and geo‑restrictions, and simplified administration for managing partner access at scale. Agencies and contractors can enforce least‑privilege sharing and maintain visibility over data ingress/egress. Deployed in government‑ready environments and aligned to FedRAMP baselines, Sharetru helps reduce exfiltration risk while supporting secure, compliant third‑party collaboration on CUI.

8. Box

Box for Government is a FedRAMP‑authorized SaaS offering purpose‑built for public sector collaboration and content governance. It combines robust sharing controls, Box Shield for data classification and threat detection, and eDiscovery/retention features that support legal and compliance workflows.

Strengths include user‑friendly collaboration, strong API extensibility, and options like Box KeySafe for customer‑managed encryption keys. Box integrates with leading productivity suites and security ecosystems, enabling organizations to standardize content management across agencies and contractors. Detailed audit logs, legal holds, and granular permissions help agencies confidently govern CUI while maintaining productivity and cross‑organization sharing.

9. FileCloud

FileCloud offers secure file sharing and content collaboration with flexible deployment—self‑hosted, managed, or hybrid—so organizations can run in FedRAMP‑authorized IaaS to inherit infrastructure controls. It provides granular sharing policies, device management, and data residency options that support regulatory compliance requirements.

Strengths include detailed permissioning, DLP and retention capabilities, and tight integration with enterprise identity (AD/SSO) and storage backends. FileCloud’s administrative visibility and audit trails help track who accessed what and when, while its hybrid model lets agencies balance control, performance, and cost. This flexibility supports CUI governance across complex, distributed environments and supplier ecosystems.

Why a Kiteworks Private Data Network Is the Ideal Choice for CUI in the Cloud

Selecting the right FedRAMP-authorized cloud platform for storing CUI is crucial for government agencies to mitigate risks associated with sensitive information. Platforms like Kiteworks provide comprehensive security and compliance features that can help agencies simplify their workflows while protecting data integrity and confidentiality.

Kiteworks’ Private Data Network uniquely unifies file sharing, email, SFTP/MFT, forms, and APIs under a single control plane with zero‑trust access, FIPS‑validated cryptography, and tamper‑evident chain‑of‑custody. FedRAMP authorization and CMMC alignment let agencies inherit proven controls while retaining isolation in single‑tenant SaaS, on‑prem, IaaS, or hybrid deployments. Centralized policy and DLP reduce misconfigurations, detailed auditability accelerates ATOs and investigations, and deep integrations with SIEM/SOAR and identity streamline monitoring. For agencies and DIB contractors protecting CUI, Kiteworks delivers governance without sacrificing usability—ideal for securing national‑security‑relevant data flows.

To learn more about Kiteworks for protecting CUI stored in the cloud, schedule a custom demo today.

Frequently Asked Questions

Controlled Unclassified Information (CUI) is sensitive but not classified data that federal agencies and contractors must safeguard under laws, regulations, and government‑wide policies. Because CUI disclosure can harm missions and national security, it requires strong controls—encryption, access governance, monitoring, and auditability—aligned to frameworks like NIST 800‑171 and CMMC. FedRAMP‑authorized cloud services help standardize these protections for hosted workloads, reducing risk and compliance friction.

FedRAMP provides standardized security baselines for cloud services used by federal agencies. CMMC overlays cybersecurity practices for DIB contractors handling CUI. Using FedRAMP‑authorized cloud offerings helps organizations inherit tested controls, streamline ATOs, and demonstrate alignment with NIST 800‑171 compliance—key to CMMC conformance. Together, they reduce gaps that jeopardize DoD contracts, accelerate audits, and improve resilience against advanced persistent threats targeting the DIB supply chain.

Check the FedRAMP Marketplace for current authorization status, impact level (e.g., Moderate, High), and the specific services or environments covered. Confirm scope details—commercial vs. government‑specific offerings (e.g., GCC High, GovCloud), regions, and inherited controls. Because providers evolve quickly, always validate the exact product/region version your organization will use, and document any shared responsibility items to ensure compliance for CUI workloads.

Prioritize end‑to‑end encryption (ideally FIPS‑validated), zero‑trust access with granular policy, strong identity integration, comprehensive logging and tamper‑evident auditability, and data loss prevention. Look for single‑tenant or government‑specific deployments, customer‑managed keys, and rich APIs for integration. Unified governance across file sharing, email, and MFT reduces blind spots. Lastly, ensure the solution supports continuous monitoring and aligns with NIST 800‑171 and CMMC practices.

It depends on risk, sovereignty, and operational needs. Single‑tenant FedRAMP‑authorized SaaS accelerates ATOs and simplifies operations. On‑prem or IaaS‑hosted models maximize control and data residency. Hybrid combines the best of both, segmenting workloads while maintaining unified governance and auditability. Whatever you choose, ensure zero‑trust access, customer‑managed keys where needed, and comprehensive logging to satisfy NIST 800‑171/CMMC requirements.

Additional Resources