Publish to Power BI

From the very beginning, Power BI allows us to import Excel workbooks in two ways: as a data source or as a report. This second option is useful when we already have ready-made reports that we want to use in parallel with Power BI reports. Recently, within the Microsoft 365 subscription, the Publish to Power BI option has appeared, which enables direct publishing of reports on the Power BI service. How does this work?