Deploy Asp.Net MVC and WCF project on production server

Question

Hi all,
I have developed a dummy Application having architecture as follows;
UI - Asp.Net MVC 4
BLL - WCF Service Project
DAL - Class Library Project
I wanna deploy / host my application to Internet.
My question is;
will i have to purchase 2 domains to deploy my WebApp and WCFApp separately
  or
There can be alternatives

Also i wish to know how to deploy a WCF service on a domain / web space using FTP. I know how to do it for a website