Where are shared data extensions stored?

Shared data extensions are stored in a shared extension folder within the Data Extensions tab. This structure allows for efficient management and organization of data extensions that can be accessed by multiple business units within the Salesforce Marketing Cloud ecosystem. By centralizing shared data in this location, users can easily locate, manage, and utilize shared data extensions across different campaigns and business units.

The Data Extensions tab serves as the primary management area for data extensions, allowing users to create, edit, and organize these resources effectively. This design promotes seamless collaboration among team members and ensures that important data assets are accessible where needed.

The other options mentioned do not provide the correct context for where shared data extensions are actually stored within the Salesforce Marketing Cloud interface. The Imports tab, Data Sources tab, and Poll Schedule tab serve different purposes and are not designed for the organization of shared data extensions.