When you manage a site, having a backup is something rather necessary, particularly if you have important info or you have invested money and time in building the Internet site. There are different scenarios why you may need a backup - if you update a script and something breaks down, if you delete a file or a whole folder unintentionally, etc. Having regular backups will help you avoid any loss of information or at least minimize the damage, which is still better than losing the entire site. You'll be able to download a copy of your content on your computer every now and then, but due to the fact that you can't do that after each change, you must rely on the backups your web hosting provider generates. Because this is something quite necessary, you must ensure that they keep up-to-date backups, because a backup performed once every one or two weeks may not do any good if you run a website such as an online store or a holiday accommodation booking portal.