Get CMMC Level 2 Ready. Fast and Defensible.

Achieve certification with a fully managed Microsoft Teams–based environment in a GCC High enclave that keeps CUI off your network and dramatically reduces assessment scope. Exostar’s Managed Microsoft 365 enables secure CUI collaboration, while sensitive data and compliance controls stay outside your network.

For SMBFor enterprise
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Whether you’re a small defense supplier or a complex enterprise, getting CMMC Level 2 ready starts with choosing a path that delivers predictably—without disrupting your business.

What Is Exostar’s Managed Microsoft 365?

Exostar’s Managed Microsoft 365 is a fully managed Microsoft GCC High enclave, delivered as a cloud service, that allows the defense industrial base to collaborate on CUI without hosting or securing that data themselves. Rather than building and maintaining an expensive environment on your own network, you access a fully managed enclave that is secured and maintained on your behalf for CMMC.

  • Supports CMMC Level 2 controls
  • Delivered in a Microsoft GCC High environment aligned with FedRAMP Moderate requirements and listed on the FedRAMP Marketplace.
  • Centralized identity, access control, logging, and audit evidence
  • Microsoft Teams environment in Microsoft GCC High for secure teams, files, and document collaboration for internal users and partners
  • Keeps CUI contained within a compliant enclave

Exostar’s Managed Microsoft 365 addresses the core technical and operational controls required for secure CUI collaboration.

 

Exostar's Managed Microsoft 365 View

Managed Secure Desktop is a secure virtual desktop add-on that gives users a safe, controlled workspace to access Exostar’s Managed Microsoft 365 without storing sensitive information on their own computers. Instead of working directly on their device, users log in to a secure desktop using an application, which connects them to a protected environment managed by Exostar.

  • Prevents CUI from touching local devices and home networks
  • Removes out-of-scope laptops, printers, and unmanaged endpoints from the scope
  • Simplifies endpoint security and assessor review
  • Reduces data leakage risk tied to user devices and remote access

The secure virtual desktop eliminates endpoint complexity and dramatically reduces assessment scope.

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Faster Path to CMMC Level 2

Get assessment-ready quickly with a managed, FedRAMP-equivalent environment built to support certification.

Reduced Scope

Keep CUI off laptops and local networks using secure desktop access—simplifying assessments and lowering risk.

Secure Collaboration That Feels Familiar

Work with teams and partners in Microsoft tools you already use, without exposing sensitive data.

Lower Cost, Predictable Compliance

Avoid MSP and DIY complexity with a fully managed approach that delivers faster results at a lower total cost.

How Exostar's Managed Microsoft 365 and Managed Secure Desktop Work Together

Start with an assessment-ready GCC High environment

A dedicated Microsoft GCC High tenant is provisioned to support CMMC Level 2 requirements from day one—no custom builds or retrofitting required.

Keep CUI off endpoints by default

Users securely access the environment through browser-based access from within Managed Secure Desktop, preventing CUI from touching local devices, home networks, or printers.

Collaborate securely in familiar Microsoft tools

Teams, files, and documents stay contained within the enclave, with governance and access controls enforced by design.

Inherit security controls and audit evidence

Security policies, monitoring, logging, and audit artifacts are enforced and maintained centrally—reducing internal effort and assessment preparation time.

Enter assessment with a defensible architecture

Assessors evaluate a known, standardized environment with reduced scope, clean boundaries, and inherited controls—simplifying validation and lowering risk.

Why This Is Different from Other Approaches

A standardized, defensible model for meeting CMMC Level 2

Most approaches still leave customers responsible for:

  • Configure and maintain security controls for your entire organization
  • Secure and scope endpoints that handle CUI
  • Explain and defend custom design decisions during assessment

Exostar’s Managed Microsoft 365 is delivered as a Cloud Service Provider (CSP) solution, not a consulting engagement. This means:

  • Majority of controls are inherited rather than implemented
  • The environment is standardized and assessment-tested
  • Scope is intentionally minimized by design
  • Compliance is operationalized, not improvised
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Get CMMC Level 2 Ready

Talk with a compliance expert to understand your CMMC needs and the best path forward.

Get CMMC Assessment-Ready

CMMC Compliance Is Now a Strategic Imperative

For most defense suppliers, the risk is real. Non-compliance doesn’t just delay projects—it puts contracts and revenue at risk. CMMC Level 2 is not an IT upgrade. It’s a business continuity decision.

  • CUI lives across laptops, email, file shares, and portals
  • A meaningful percentage of revenue is tied to defense contracts
  • Scope quietly expands with every endpoint that touches data
  • DIY builds and MSP-led approaches take years and are expensive
Get CMMC Assessment-Ready
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A Different Model: Fully Managed, Outcome-Based Compliance

Most approaches to CMMC rely on consultants, MSPs, or internal teams assembling tools and policies over time.

Those models break down under real assessment pressure. Exostar’s Managed Microsoft 365 is delivered as a fully managed CSP solution—not an MSP engagement.

With this approach:

  • You inherit compliance evidence instead of building it
  • The environment is near out-of-the-box
  • Governance, identity, and controls are enforced centrally
  • You move faster with fewer internal resources
Get CMMC Assessment-Ready

Keep CUI Off Your Network (The Key Differentiator)

Managed Secure Desktop is the virtual desktop layer of the CMMC Ready Suite—and one of the biggest differentiators from other approaches.

By accessing Exostar’s Managed Microsoft 365 through a secure virtual desktop:

  • Laptops, home networks, and printers stay out of scope
  • Sensitive data never touches unmanaged endpoints
  • Assessment complexity drops dramatically
  • Cost and timelines shrink

Together, Exostar’s Managed Microsoft 365 and Managed Secure Desktop support CMMC Level 2 controls, reducing scope and accelerating readiness—saving time and money.

Get CMMC Assessment-Ready
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Supports Specialized Software and CAD

If your work relies on CAD, engineering tools, or custom software, the secure desktop supports bring-your-own applications—so critical workflows stay inside the compliant enclave.

Get CMMC Assessment-Ready

What’s Managed for You

What Exostar Covers for You

When you use Exostar’s Managed Microsoft 365 + Managed Secure Desktop, Exostar owns and operates the core compliance infrastructure—allowing you to inherit controls instead of building them.

This includes controls across key CMMC domains:

  • Access Control (AC) Identity, authentication, role-based access, and session enforcement are centrally managed.
  • Audit & Accountability (AU) Logging, monitoring, and audit trails are enabled by default and retained for assessment.
  • System & Communications Protection (SC) CUI is isolated within a governed GCC High enclave and accessed through secure desktops.
  • Configuration Management (CM) Standardized, assessment-tested configurations are enforced and maintained by Exostar.
  • Identification & Authentication (IA) User lifecycle management, MFA, and access policies are centrally controlled.
  • Media Protection, System Integrity, and Incident Detection CUI never resides on local devices, removable media, or unmanaged endpoints.

In practical terms, this means you do not need to:

  • Architect or secure a GCC High tenant
  • Configure and maintain complex security policies
  • Manage endpoint scope for CUI-handling devices
  • Generate technical evidence from scratch
  • Defend custom design decisions during assessment

These controls are inherited, documented, and consistently enforced as part of the service.

What You Still Own (and Why That’s Okay)

CMMC isn’t purely technical—and no solution eliminates organizational responsibility entirely.

The remaining controls typically fall into areas such as:

  • Policies and procedures approved by your organization
  • Personnel security and training
  • Risk management and governance
  • Incident response planning and execution
  • Supplier and contract-specific requirements

Once CUI is centralized and technical scope is reduced, these controls become far more manageable.

You’re no longer trying to secure everything. You’re securing how your organization operates around a known, controlled environment.

How the CMMC Ready Suite Supports the Remaining Controls

The Exostar CMMC Ready Suite is designed to close the gap and guide you through certification with confidence.

The suite provides:

  • Guidance and tooling aligned to the Exostar’s Managed Microsoft 365 + Managed Secure Desktop architecture
  • Templates and workflows for required policies and procedures
  • Support for assessor-ready evidence collection
  • A clear responsibility model—so nothing falls through the cracks

Instead of stitching together consultants, MSPs, and tools, the Ready Suite delivers a cohesive, defensible compliance path built on a secure foundation.

The Result: Secure CUI, Reduced Risk, and a Faster Path to Certification
Illustrations of levels 1, 2 and 3 of CMMC compliance and certification.

Not Sure if CMMC Applies to You?

If you handle defense-related drawings, specs, schedules, or contract data—then it likely does.

Take the Quiz

Join a 30-Minute CMMC Cybersecurity 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.

Register for the Demo

What You Get: A Secure Enclave Built for Real Work

Secure CUI Collaboration

  • Teams-based collaboration with internal users and partners
  • Secure file storage and sharing
  • In-browser document viewing and editing
  • Real-time coauthoring and version control
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Governance Without Friction

  • Role-based access (admins, managers, members)
  • Explicit partner onboarding
  • Domain allowlisting
  • User lifecycle management and seat recycling
  • Download and sharing controls with audit trails
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Built for Real-World CUI Exchange

  • Secure intake of CUI from partners
  • Controlled external sharing with acknowledgements
  • Clear audit trails for assessors
  • No shadow IT. No risky workarounds.

 

 

 

 

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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 to assess your readiness and map a faster path to CMMC Level 2 certification.

Thanks for Getting in Touch

We’ve received your submission and a team member will contact you shortly to discuss secure collaboration and CMMC compliance using Exostar’s Managed Microsoft 365. We’re here to help you move forward with confidence.