Porn uploading method and domain redirecting

HiSo far i have read a lot of online information on the porn uploading method on adult tubes and promoting the affiliate links in the video titles.Well they all, said that they redirect the domain name to the cam offer affiliate link but they said we need to buy both hosting and the domain name.Why we need to buy the hosting for this method to work?I mean we just need to redirect the domain name to the affiliate offer and that should work without the hosting right?

If you want only redirect domain to aff link you don't need any hosting.

There you had read that we need to buy the hosting for this method - you saw promotion of hosting aff links.

You only need a domain. (It does not have to be .com) lol