In Most Small to medium companies you will tend to find most installations of Server 2012 done via the GUI install, some of the advantages are if you are not familiar with command line, it might take a lot of time to get your head around all the commands that need to be inserted. Also if you not great at typing like me then this is also a good option.
Some other advantages of a GUI interface are:
- It’s more intuitive
- Easy to Navigate
- Visual Feedback
- Admins do not have to know a lot about command line.
- Allows multiple instances of windows to be open at the same time