I'm writing here becouse one question doesn't let me sleep calmly. How it's possible that site www.visualstudio.com when I sign in to free TFS account, create special 'part' of site with url {myprojectname}.visualstudio.com?. Is it achieveable in my project using ASP.NET MVC 4 or 5? How it doesn't affect in current DNS system? or it affect? What should I read to let my site be so deeply customizable?
for example:
user1.mysite.xx
user2.mysite.xx/aaa/4/sda/something_other