When you run a website, having a backup is something extremely necessary, especially if you have important data or you have invested money and time in creating the Internet site. There are different scenarios why you could need a backup - if you update a script and something goes completely wrong, if you delete a file or a whole folder by accident, and so on. 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 can download a copy of your content on your desktop or notebook from time to time, but due to the fact that you simply can't do that after every change, you must rely on the backups which your hosting provider generates. Since that's something rather vital, you need to ensure that they keep up-to-date backups, given that a backup generated once every one or two weeks will not do any good in case you run a website such as an online store or a holiday accommodation booking website.