Unlike some years back when Internet sites were almost exclusively static, the standard these days is to have a feature-rich, dynamic site. Not everybody can build this kind of site completely from scratch though, hence the simplest solution to have a dynamic site is to use a script app. A lot of website hosting companies offer script installers which you can use to add this kind of an app for each of your domain name or subdomains, so you will not need to set up anything manually. The main advantage of using an installer tool is that the scripts are ready to use in a couple of minutes and the copy which will be set up is already with the settings needed for it to run efficiently on the particular hosting web server, so you'll not have to change any script or account settings. In this way you can quickly build one with only a couple of mouse clicks even if you have never had a site before.
