The section Data Sources allows you to import additional data sources, e.g. to define lead targeting more precisely.
Closed:

Opened:

New Data Source: Import of additional data sources, e.g. .fodt files / templates for lead control.
Data Sources: List of data sources, e.g. language data.
Data schema: Input of additional codes, e.g. JSON objects.
Delete Collection: Delete the data sources.
⚠️ You have to import product data via the section Products, not in Data Sources.