Manage Companies Users Can Use Teams With

Use this operation to add or remove allowed collaboration domains for Microsoft Teams.

Role Requirements

Procedure Scope: Administrators

Required Group Membership: Admin.Collaboration

Handbook Reference

Package: Collaboration Security

Domain: Teams Collaboration Management

Modifies: Allowed Teams Collaboration Domains

When to Perform this Operation

As Needed: Proactive or in Response to User/Security

Technical Description and Importance

Managing allowed Teams collaboration domains ensures that external communication remains within approved organizations. By carefully controlling which domains users can collaborate with, you maintain compliance with organizational data-sharing policies while reducing the risk of unauthorized external access. This approach helps prevent data leakage while allowing necessary business communications with trusted partners. Regular management of these domains ensures Teams remains a secure and controlled collaboration environment.

Management Options

• Add a Company
• Remove a Company

Add a Company:

Purpose
Add a domain to the allowed Teams collaboration list to enable communication.
Use Case
A new business partner requires Teams collaboration with internal users.

Remove a Company:

Purpose
Remove a domain from the allowed Teams collaboration list to restrict external communication.
Use Case
A former business partner’s domain must be removed to prevent ongoing collaboration.

Operation	Action	Target
Add a Company	Addition	Allowed Teams Collaboration Domains
Remove a Company	Removal	Allowed Teams Collaboration Domains

Add a Company

This operation adds a domain to the allowed Teams collaboration list, enabling users to communicate with external organizations.

       1. Teams Collaboration Domain Addition

Remove a Company

This operation removes a domain from the allowed Teams collaboration list, preventing further external communication with that domain.

       1. Teams Collaboration Domain Removal

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