Microsoft and Mattermost for critical infrastructure and national security enterprises
Unlock the full potential of your Microsoft Teams, M365, and Entra ID investment, without compromising on data sovereignty or control.
Extend your Microsoft investments with a Mattermost platform built for the specialized needs of critical infrastructure.
Enterprise collaboration to the edge
Retain full on-prem or private cloud control of all messages, files, voice, and screen share inside Mattermost deployed on Azure Arc, bringing collaboration to the tactical edge.
Integrate general and specialized tools seamlessly
Interoperate with key technical and operational systems, from COTS to custom tools and legacy software using your method of choice: APIs, webhooks, or the established plugin architecture.
Integrate general purpose and specialized workflows
Combine integrations and flows between Teams and Mattermost to enable native playbooks and mission SOPs without context switching or separate logins.
Effective human-machine teaming fully under enterprise control
Leverage Azure AI models directly in channels, in direct messages, and with playbooks to accelerate workflows using cloud or on-premises models with Foundry Local.
Resilience to global infrastructure events
Enable out-of-band communication and workflows within your organization-controlled infrastructure during global outage incidents and other DDIL situations.
Purpose-built tools and workflows that follow the mission, in every environment
Mattermost extends your existing Microsoft Azure investment into IL5 and IL6 environments where standard cloud collaboration can’t follow. Built for teams needing data sovereignty, secure workflows, and consistent tooling across air-gapped and disconnected networks, it complements Microsoft solutions for high-security, intermittently connected operations.
Using Azure Arc and Foundry Local, data stays isolated and under your control, while Foundry-managed models bring local AI inference to accelerate mission-critical workflows—no cloud dependency required.
Accelerate incident response with isolated, out-of-band coordination
Security incidents produce sensitive data requiring strict access controls and a coordination channel separate from the systems under threat. Mattermost provides that environment: a segmented, out-of-band space with one-way sync from enterprise to edge, ensuring sensitive data never exits.
Pairing Mattermost with Microsoft blends the enterprise and high-security worlds with fine-grained control, information flow, and auditing so teams know where their data is and isn’t. Integrations with critical security tooling let operators automate signals from Microsoft Security Suite and third-party tools using Mattermost Playbooks for control, coordination, and reporting.
Any environment. Any system. One collaboration layer.
Command & Control
Interconnected environments with advanced information controls and sovereign AI
Enable mission-critical coordination at the edge by deploying Mattermost in secure, on-prem, or air-gapped environments integrated with Microsoft Teams. Use Mattermost Cross Guard to synchronize data across classification levels and allied environments in a unified interface. Leverage Foundry Local to enable AI-powered workflows while keeping your most sensitive data under your strictest controls.
In August 2021, the US Air Mobility Command drove more on-time departures when 79.5% of personnel adopted Mattermost to enhance access to flight plans, routing, and operational communications. Read more >
Cybersecurity Operations
Out-of-band incident response for Microsoft-centric environments
Maintain operational continuity during global infrastructure incidents and in DDIL scenarios with a dedicated out-of-band instance for secure incident response. Achieve faster coordination, assessment, and resolution using collaborative Playbooks combined with the Microsoft Security Suite to evaluate, track, and audit a response from first signal to final report.
At NATO Locked Shields 2026, blue teams coordinated more than 150 operators against thousands of simultaneous real-time attacks using AI agents to assess alerts and accelerate responses. Read more >
Sovereign & Critical Infrastructure
Modernize legacy Skype, Jabber, and Webex deployments with sovereign data guarantees
Migrate Skype for Business, Jabber, and Webex deployments to a joint Mattermost-Microsoft solution for verifiable on-prem data storage, with seamless enterprise-wide, cross-device collaboration on Azure infrastructure, fully compliant with the CLOUD Act and Schrems II requirements.
RTE, France’s electricity transmission system operator, uses Mattermost as the enterprise-wide collaboration tool spanning every device from the operations center to the field technician. Read more >
DevSecOps | Agile Development
Ship software quickly, securely, and efficiently
Increase the focus and efficiency of developers, security engineers, and system operators starting at identity with Entra ID and extending through the SDLC with GitHub, Azure DevOps, Microsoft Defender, and more. Unify detection, evaluation, and response in a dedicated instance to isolate sensitive information while keeping the team working in one place.
A global media company switched to Mattermost for DevOps and business continuity to aggregate and resolve signals earlier in the process, preventing $100,000 per minute in potential losses.
Read more >
Mattermost integrates with the Microsoft stack, extending workflows, access, and control into every environment your teams operate in.
Enterprise to Edge Notifications
Stay informed across environments without switching tools:
- Surface Teams notifications — including appointments, calls, and reminders — inside Mattermost so operators in secure environments never miss enterprise updates
- Keep less sensitive Teams data flowing into the Mattermost environment without compromising the boundary in the other direction with one-way sync
Mattermost in Teams & Outlook
Eliminate the “swivel chair” and simplify user onboarding:
- Use the full functionality of Mattermost within the familiar Teams and Outlook interfaces without switching tool
- Collaborate on projects, invites, and workflows in real time across both Mattermost and Teams channels
OneDrive integration for Office 365
Access, share, and collaborate on files without leaving Mattermost:
- Post Mattermost messages automatically when files or folders are added to OneDrive
- Upload and share OneDrive files directly from Mattermost channels
- View and edit Word, Excel, and PowerPoint files in-channel via the Collabora Online plugin
Note: Integration delivered through an n8n or Zapier connector.
User Management with Entra ID
Centralize identity and access control across Mattermost and Microsoft
- Sync Entra ID groups to predefined roles in Mattermost
- Automatically import user attributes from Entra to drive attribute-based access controls
- Assign, manage, and delete team and channel roles directly through Entra ID groups
- Use @ mentions to notify users in Entra ID groups
SSO with Entra ID in IL5 and IL6 Environments
Extend identity federation into classified and high-security environments:
- Enable single sign-on with SAML and OpenID Connect, including Office 365 SSO with Microsoft Entra tenants
- Federate user identities and attributes from Entra ID into Mattermost automatically
- Provision new accounts and manage admin access based on user attributes, with no manual intervention required
