You can now create new Teams based on template.
These templates will automatically create the new Teams with channels and apps associated with it.
You have 13 ‘out of the box’ Teams models available, covering needs from adoption to store management or service desk (you can get details about these templates here https://docs.microsoft.com/en-us/MicrosoftTeams/get-started-with-teams-templates-in-the-admin-console#what-are-base-template-types)
You can also edit these template or create your own template.
You can access this new option from the Teams administration portal (https://admin.teams.microsoft.com/) and then access the Teams\Teams templates blade
There you can either edit an existing template by selecting the template and click Edit to add/remove channels or apps
or use the Add to create your own template, either from an existing template, existing Teams or from scratch
Then the templates will be available to your Teams user when they want to create a new Teams.