An access log includes a record of all the files which have been requested by the visitors while exploring your site. The list is thorough, so when you have a webpage with 2 embedded images, for example, all of the three files will be in the log, not only the page. An access log typically features the date, the OS, the web browser and the IP address for each and every file in human-readable form, so you can get a more complete picture about the hottest files on your Internet site. The log, which is also typically called "raw data", is an addition to the web data which you normally get with a hosting account, not a substitute. An example why you may need this sort of a log is if you want to use some software on your computer system to prepare a report about the website’s performance, but you do not want to use the typical graphs and tables which come with the server-generated web stats.