Creating an OS is very tedious job were even compiling it from ready made sources can take upto 5 to 6 days, but now using suse studio you can create a your own OS by few clicks and also can test it online but many time during testing it shows you error.
You can create your own OS within say 10 mins because it integrates the already compiled packages. Once deep into creating an OS you can also create your own custom OS and can market them. Great for students who want to learn about different packages in Linux.