Usage Import is a tool included with Microsoft Site Server and Microsoft Site Server Express for importing log files from a Web server. Usage Import can read various log file formats, which are Site Server, W3C Extended, Microsoft Internet Information Server (IIS), and NCSA Common. To use Usage Import, you select the desired log files and start the importing process. The importing process will import the log file data into the Site Server database. You can generate reports and analyze these imported logs by using Report Writer.