A backup is a copy of an Internet site that's kept on another server and can be restored if something wrong happens with the live Internet site - a failed script update, an unintentional deletion of some file or of your entire database, etcetera. Restoring the website the way it was will take away or minimize the damage the issue may have caused, that is by all means an obviously better option than having to reconstruct your entire Internet site from scratch. While you could download a copy of your content on your laptop, keeping a backup is a function that nearly all web hosting companies incorporate as part of their plans. You must take a look at how frequently they do that, though, because some service providers generate a backup just once every few days, that could be far from enough for a booking website or an e-commerce portal in which the data is updated each day. You should also see how fast and easy a backup could be restored, which can be crucial if some issue appears on your site.