I'm new to rails and web development. I got some questions regarding Paas, Hosting and SaaS
What exactly are Paas, Hosting and SaaS ? What are the differences ?
I understand that you can deploy apps to heroku(and they will give you a domain name, something like example.herokuapp.com) but heroku doesn't seem to have a place that I can buy domain names like godaddy?
Do I buy domain names from Godaddy or other Hostings(webhostinghub.com) and then transfer them to Heroku/other Paas ? How does it work ? I don't understand.
Please help. Thanks in advance.
ps: Merry Christmas