A backup is a copy of an Internet site that is kept on a separate server and can be restored if a problem occurs with the live site - a defeated script update, an unintended deletion of a file or of the entire database, and so forth. Restoring the site the way it was will eradicate or lessen the damage the problem may have caused, which is by all means an obviously better alternative than having to rebuild your whole Internet site from scratch. Even though you may download a copy of your content on your personal computer, keeping a backup is a function that the majority of web hosting companies offer as part of their plans. It is important to check out how often they do that, though, because some providers generate a backup just once every couple of days, which may be far from enough for a booking Internet site or an e-commerce portal where the info is updated every single day. It's adviseable to see how quick and easy a backup may be restored, which could be crucial if some issue appears on your Internet site.