Store CUI Securely. Collaborate with Confidence.
Ensure your team and partners can share and manage Controlled Unclassified Information (CUI) in a secure, compliant environment. With 85 of 110 NIST SP 800-171 controls built-in and seamless collaboration tools, you can simplify CMMC readiness without disrupting your workflow.
Whether you’re a growing small business or a large defense contractor, meeting CMMC requirements starts with choosing the right path. Explore options designed to match your organization’s size, complexity, and compliance goals—so you can stay focused on what matters most.
Built for Compliance. Designed for Collaboration.
A secure enclave purpose-built for handling Controlled Unclassified Information (CUI). By isolating sensitive data and applying strict identity and access controls, you ensure only authorized users can access, store, or share protected information. This approach meets federal compliance requirements and enables safe, efficient collaboration across internal teams and external partners.
Meet compliance requirements faster with built-in support for 85 of the 110 NIST SP 800-171 controls—no extra configuration needed. Integrated with Microsoft Azure GCC High, the solution runs in a secure, government-authorized cloud designed for handling sensitive federal data. As an approved External Service Provider for Microsoft’s FedRAMP-authorized GCC High environment, it ensures the controls, protections, and assessment readiness your business needs to confidently pursue CMMC certification.
Identity and access management ensures that only verified users can access sensitive systems and data. Access is managed through the Exostar Managed Access Gateway (MAG), the trusted entry point for members of the Exostar network. This means you and your partners benefit from a consistent, secure login experience that simplifies oversight and strengthens trust across every connection.
Compliant File Drop functionality enables external partners to email Controlled Unclassified Information (CUI) directly into your secure enclave—without needing to be provisioned as users. This simplifies collaboration while maintaining compliance, allowing you to collect sensitive files quickly and safely. With built-in logging and encryption, you stay assessment-ready while reducing administrative overhead.
The managed service model reduces internal burden by offloading deployment, configuration, and ongoing maintenance to a team of experts. This ensures your environment stays secure, up-to-date, and aligned with CMMC requirements—without the need for deep in-house expertise. You gain peace of mind knowing that compliance, support, and updates are handled for you.
Join a 30-Minute Demo and Q&A
Join a 30-minute session to see how you can meet CMMC compliance requirements and collaborate securely—without the complexity. Includes a live demo and expert Q&A.
Frequently Asked Questions
A secure, fully managed Microsoft 365 GCC High environment designed to help defense contractors store, share, and collaborate on CUI while meeting CMMC and NIST SP 800-171 requirements.
Yes. MSPs can offer Exostar’s Managed Microsoft 365 as part of their service portfolio to help clients meet CMMC and NIST SP 800-171 requirements. The managed environment simplifies compliance, reduces risk, and provides a secure enclave for storing and sharing CUI—without requiring MSPs to build or maintain their own compliant infrastructure.
Yes. It supports 85 of the 110 NIST SP 800-171 controls, significantly reducing the gap to full CMMC Level 2 compliance.
Yes. It’s built as a secure enclave specifically for the processing, storage, and transmission of Controlled Unclassified Information (CUI).
No. The solution is fully managed—deployment, updates, and compliance monitoring are handled for you.
Yes. The platform supports compliance with DFARS, ITAR, EAR, and other regulatory requirements relevant to the Defense Industrial Base.
Absolutely. The environment provides assessment-ready documentation and helps build the body of evidence required for CMMC assessment.
Yes. The solution is subscription-based and designed to scale with your user count, storage needs, and compliance complexity.
Yes. Features like Compliant File Drop and controlled Microsoft Teams access allow external partners to securely share and receive sensitive files without full user access.
Yes. Exostar’s Managed Microsoft 365 is a core component of the CMMC Ready Suite and compliments tools like Certification Assistant and PolicyPro.
Related Resources
CMMC Readiness for Every Business Size
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| Satisfies 85 out of 110 NIST SP 800-171 Controls |
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| CMMC Maturity Level 2 Compliant |
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| DFARS and ITAR/EAR Compliant |
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| Integrated with Microsoft Azure GCC High Cloud |
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| Secure Storage and Handling of Data & Intellectual Property |
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| External Service Provider of Microsoft’s FedRAMP-authorized Microsoft 365 GCC High |
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| Secure Shared Tenant |
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| Dedicated, Standalone Tenant |
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| Multifactor Authentication |
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| Advanced Identity Validation |
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| Secure Internal/External Microsoft Teams Collaboration |
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| Document Sharing & Real-Time Collaboration |
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| Edit in Microsoft Application Formats Directly in Browser |
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| Use Existing Emails |
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| Web-Based Login for Existing O365 Commercial Accounts |
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| B2B & Web-Based Login for Existing O365 Commercial Accounts |
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| Leverage Large Exostar Community |
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| 1 GB (Expandable) |
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| 1 TB (Expandable) |
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| 48-Hour Setup, Initial Training, 24/7 Customer Support & Technical Assistance |
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| Initial Training, 24/7 Customer Support & Technical Assistance |
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| Up to 75 Users |
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| 75+ Users |
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| Custom; Contact for Pricing |
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Ready to Secure CUI and Simplify Compliance?
Get the tools and support you need to confidently meet CMMC requirements. Talk to an expert today to see how a secure, managed environment can help you protect sensitive data and CMMC reduce complexity.
Looking for help? Ask about additional tools and support services to accelerate your readiness.