It moves data in and out of WooCommerce. You export what is already in your store to a file, edit it in Excel or Google Sheets, and import it back. You can also pull a supplier feed from a URL or an FTP server, or copy an entire store into one bundle and restore it elsewhere.
It comes in two forms: three free single-purpose plugins on WordPress.org, and one premium plugin that covers every data type together and adds scheduling, remote sources, and more file formats.