How to create BI report/analysis based on external data?

Summary:

Is it possible to create report/analysis based on external data, such as an external ERP system?

What options does Fusion have for this kind of connection?

Is it necessary to aquire additional licences for this?

Could you provide some documentation on that, please?

I can see in the Data Model page, that we can create new Data Sources. Where could I get more information about these options? Are these the only options available?

Version (include the version you are using, if applicable):

25A