REST Inbound Default Parameters -REST Response Base URL

Hi Experts,

We are upgrading from IP15.18 to IP17, and I am new to REST services, trying to learn. I am going through the Documents and Bookshelf, but haven't come across detailed explanation on 'REST Response Base URL'.

I am trying to gather more knowledge on 'REST Response Base URL' default parameter when creating a REST Inbound profile.

Lets take an example, we have around 10 Inbound services, which we would like to convert them to REST services.

* Do we need to create AI profile for each service? I doubt it, but want to double check.

* 'REST Response Base URL' - how does this work, what is the use of this URL?