CUI Compliant

0 NIST 800-171 gaps detected. FedRAMP authorized at High impact level. Approved for CUI handling in DoD environments.

Collaboration

Microsoft Teams GCC High

Name: Microsoft Teams GCC High
Author: Microsoft

by Microsoft

FedRAMP AuthorizedHigh Impact

FedRAMP Status

FedRAMP Authorized

Impact Level

High

Overview

Microsoft Teams GCC High provides chat, channels, and collaboration on dedicated government infrastructure. It is FedRAMP High authorized and supports CUI and ITAR communication for defense contractors.

CUI Risk Assessment

FedRAMP authorized at High impact level. Approved for CUI handling in DoD environments.

Deployment & Architecture

Deployment Model: Government Cloud (FedRAMP boundary)

Microsoft Teams GCC High operates within a FedRAMP-authorized boundary. CUI can be processed within the authorization scope, but contractors must verify their specific use case falls within the system's security boundary as documented in the SSP.

Configuration Checklist

1ISSO must update the System Security Plan (SSP) to include Microsoft Teams GCC High within the authorization boundary and document data flows per NIST 800-171 requirement 3.4.2.
2Contracts officer must verify GCC High procurement through authorized Microsoft Cloud Solution Provider with FedRAMP compliance attestation per DFARS 252.204-7012.
3System administrator must configure tenant-level external sharing restrictions to prevent CUI disclosure to unauthorized external domains per NIST 800-171 AC-3.
4ISSO must implement data loss prevention (DLP) policies to detect and prevent CUI spillage in Teams channels and chat messages per NIST 800-171 requirement 3.3.1.
5System administrator must establish information barriers to segregate ITAR-controlled technical data from general CUI processing per DFARS 252.204-7021.
6ISSO must configure audit logging for all Teams activities including channel access, file downloads, and meeting recordings per NIST 800-171 AU-2 requirements.
7System administrator must disable guest access and external federation capabilities to maintain CUI boundary integrity per NIST 800-171 AC-20.
8Training coordinator must deliver 8-hour CUI handling training covering Teams-specific procedures for marking, sharing, and storing controlled information.
9ISSO must establish POA&M entries for any Teams GCC High configuration gaps identified during implementation assessment.
10System administrator must implement conditional access policies restricting Teams GCC High access to government-furnished or approved devices per NIST 800-171 AC-7.

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Related Compliance Assessments

CMMC Readiness: READY

93% NIST coverage, Level 2

AI + CUI verdict: Microsoft 365 Copilot (commercial cloud)

Commercial environment — no CUI authorization established

FedRAMP: HIGH authorized

Microsoft Azure Government authorization details & procurement guide

Frequently Asked Questions

Is Microsoft Teams GCC High FedRAMP authorized?

Yes. Microsoft Teams GCC High is FedRAMP High authorized as part of the Microsoft 365 GCC High environment.

Can I use Teams GCC High with CUI?

Yes. Teams GCC High is approved for CUI and ITAR communications, with data stored in US Government Azure datacenters.

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