The document discusses different file types used in Tableau for saving data analysis results. It describes .twb (Tableau workbook), .twbx (packaged workbook), .tds (data source), .tdsx (packaged data source), .tde (data extract), .tbm (bookmark), and .tps (preferences) file types used to save and distribute Tableau work. These files store things like workbook details, data connections, extracted data, and user preferences in XML format for sharing Tableau analyses.