Dependencies of Microsoft Teams

 A new Microsoft 365 Group

A SharePoint Online site and document library to store team files

An Exchange Online shared mailbox and calendar

A OneNote notebook

Governance, security, and compliance for Teams

Microsoft 365 Groups is the cross-application membership service in Microsoft 365. It is an object in Azure Active Directory.

Shared resources for Microsoft 365 Groups

Microsoft 365 Groups is the foundational membership service that drives all teamwork across Microsoft 365. With Microsoft 365 Groups, you can give a group of people access to a collection of shared resources. These resources include:

A shared Outlook inbox

A shared calendar

A SharePoint document library

A Planner

A OneNote notebook

Power BI

Yammer (if the group was created from Yammer)

A Team (if the group was created from Teams)

Roadmap (if you have Project for the web)

Stream