Configure Microsoft Teams core capabilities

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1 Validate that your environment includes all Teams prerequisites Teams depends on other platforms to construct an end-to-end collaboration solution. Work with your IT teams to ensure that you’ve deployed and properly configured Exchange, SharePoint Online, and OneDrive for Business. How SharePoint Online and OneDrive for Business interact with Microsoft Teams

How Exchange and Microsoft Teams interact
2 Validate that Teams is enabled for the tenant Teams is turned on by default for all organizations. Check the Services & add-ins page in the Microsoft 365 admin center to verify that Teams is enabled for your tenant, and enable it if necessary. Set up Microsoft Teams in your Office 365 organization
3 Configure roles and permissions Teams support two types of roles: Member and Owner.

After adding a member to a team, an owner can also promote a member to the Owner role. As a best practice, we recommend that you have at least two owners assigned to each team.

By default, everyone in the organization who has a mailbox hosted on Exchange Online can create a team. A user who creates a new team is automatically granted the Owner role for that team.

If you need to, you can configure Office 365 group settings to only let specific users create new teams.
Assign roles and permissions in Microsoft Teams

Office 365 groups and Microsoft Teams

Manage who can create Office 365 Groups
4 Configure tenant-wide Teams settings You can configure some Teams settings at the tenant level. Users who are enabled for Teams inherit these settings from the tenant configuration:
  • General
  • Email integration
  • Apps
  • Custom cloud storage
  • Calls and meetings
  • Messaging
Manage Microsoft Teams settings for your organization
5 OPTIONAL: Configure guest access You use guest access in Teams to collaborate with people outside your organization by granting them access to teams and channels. Guest access is a tenant-level setting in Teams. It’s turned off by default.
Enable guest access and configure tenant-wide guest settings, if your organization plans to use that feature.
Guest access in Microsoft Teams
6 OPTIONAL: Configure Teams naming policy Teams leverages the naming policies for Office 365 Groups when users create or edit team names.

By default, no naming restrictions are applied when a user creates a team.

If you need to enforce rules for teams names, configure Office 365 Groups naming policies that apply to your organization. You can set mandatory prefixes and suffixes and specify blocked words.
Plan for Office 365 groups when creating teams in Microsoft Teams

Office 365 Groups naming policy
7 Configure Exchange for the Teams SMTP domain Teams uses Exchange Online to send notifications to team members by using the SMTP domain — email.teams.microsoft.com — when they’ve been added or removed.

Be sure to add this SMTP domain to the accepted domains list in your Exchange infrastructure.
Add the Microsoft Teams SMTP domain as an accepted domain in Exchange Online
8 Configure and manage user access to Teams Although we highly recommend that you enable all users for Teams, you can allow or disallow access to Teams on a per-user basis by assigning or removing the Teams product license. Manage user access to Microsoft Teams
9 Assign licenses to users Assign licenses to your users for features like Audio Conferencing, Phone System, and Calling Plans Assign Skype for Business and Microsoft Teams licenses
10 Optional: Use PowerShell to administer Teams You can use PowerShell cmdlets rather than the Microsoft 365 admin center to administer and manage Teams settings. Microsoft Teams PowerShell