How can you migrate data to SAP S/4 Hana Cloud?

According to the SAP S/4HANA Cloud, public edition Learning Journey1, you can migrate data to SAP S/4 Hana Cloud using staging database or file templates. Staging database is a method that allows you to transfer data from a legacy database to SAP S/4HANA Cloud using predefined migration objects and mappings. File templates are files that contain the data in a predefined format that can be uploaded to SAP S/4HANA Cloud using the migration cockpit.