Teams is also being added to existing installations of Microsoft 365 Apps on devices running Windows as part of the normal update process.
What about existing installations of Microsoft 365 Apps? You can also use PowerShell to remove Teams as shown in this script sample. If you previously installed Teams separately from installing Microsoft 365 Apps, you might see multiple instances of Teams Machine-Wide Installer. To remove Teams after it's been installed, go to Control Panel > Uninstall a program and uninstall Microsoft Teams and any instances of Teams Machine-Wide Installer.
If you're letting your users install Microsoft 365 Apps for themselves from the Office 365 portal, you can't exclude Teams from being included as part of the installation, unless you use Group Policy. If you're deploying Microsoft 365 Apps by using Microsoft Intune, there is a checkbox to exclude Teams on the Configure App Suite pane. If you're deploying Microsoft 365 Apps by using the Office 365 Client Installation wizard in Microsoft Endpoint Configuration Manager (current branch), you can set Teams to the Off position in the configuration UI. For more information, see Overview of the Office Customization Tool. The OCT provides a web-based interface for making your selections and creating your configuration.xml file to be used with the Office Deployment Tool. Instead of using a text editor to create your configuration.xml, we recommend that you use the Office Customization Tool (OCT). If you want to use the Office Deployment Tool, you can use the ExcludeApp element in your configuration.xml file, as shown in the following example. Or, as an alternative, you can let Teams be installed, but use Group Policy to prevent Teams from automatically starting when the user signs in to the device. If you don't want Teams included when you install Microsoft 365 Apps on devices running Windows, you can use Group Policy or the Office Deployment Tool.
How to exclude Microsoft Teams from new installations of Microsoft 365 Apps For more information, see Microsoft Teams installations on a Mac.
Office for Mac comes with any plan that includes Microsoft 365 Apps.