what is azure Power BI Embedded resource?

Hi,

In azure, I can create a power BI embedded resource, what is the relationship between this and the reports we have on powerbi.com?

Are they somehow linked or they are totally independent thing?

I was told that this power BI embedded resource can be used to create reports and embed into my apps. Is there a way to upload a pbix file to this power BI embedded resource? From azure portal, I can't find an upload report function.

Many Thanks