Unlike some years back when websites were almost exclusively static, the standard these days is to have a feature-rich, dynamic web site. Not everybody can create such a website completely from scratch though, hence the simplest solution to have a dynamic website is to use a script application. A lot of hosting companies offer script installers which you can use to add this sort of an application for each of your domain or subdomains, so you will not need to set up anything manually. The main benefit of using an installer tool is that the scripts are available to use in a couple of minutes and the copy that'll be set up is already with the settings necessary for it to run the way it should on the particular hosting server, so you'll not need to alter any script or account settings. In this way you can effortlessly build one with simply a few mouse clicks even though you may have never had a website before.