1. Office 365 Groups provide a unified identity for collaboration across Office 365 applications like SharePoint, Exchange, and Teams. 2. When a new group is created in any Office 365 application, related group experiences are automatically populated in other connected applications using the shared Azure Active Directory identity. 3. Developers can extend Office 365 Groups and Teams capabilities by building apps, tabs, bots, connectors and other extensions that integrate with the Teams platform.