Businesses just starting to use Teams are sometimes concerned that users can create teams and channels on their own by default. Consider requiring users to complete a training course on Teams and then adding them to the group of allowed users.

Many businesses use Teams to collaborate with outside clients, suppliers, and partners beyond participating in meetings. To allow external users to fully participate in teams, enable guest access.

It is different than guest access in that it only allows users outside of the business to initiate a Teams chat. This is useful when it is desirable for employees at businesses to initiate a chat just by knowing someone’s email address; however, it may turn tricky in situations where uninvited chats are undesirable.

Teams includes the ability for users to upload and share files from cloud storage services such as DropBox, Box, and Google Drive. Some businesses may want to limit cloud storage options for their users to only use OneDrive and SharePoint.

Teams provides numerous customizations to the settings to further control audio/video settings, content sharing, and behavior of dial-in users.

Messaging policies are a set of guidelines that dictate how messages should be sent, received, and organized within Teams. Specifically, you can block/allow different content types.

Consider how external users access files shared via OneDrive. Sharing files can be very useful for collaboration and by default anyone with a link to a shared file can access it.

Allows organizations to control what apps are available to Teams users. You can allow or block all apps or specific apps published by Microsoft, 3rd parties, or your organization.