Usage Import reads your Internet server log files and reconstructs the actual requests, visits, users, and organizations that have interacted with your sites within the database. In order to relate the log files to the logical organization of your sites, Microsoft Site Server Express Analysis uses two principal components of the Usage Import: the Log File Manager, which organizes, filters and performs the actual importation of your logs for analysis; and the Server Manager, which sets up the site structure for which the logs are imported. (The Log File Manager and Server Manager are discussed fully below.)