How to use my subdomain with order form or shopping cart

In stead of using a long order form url, what is the best way to link (forward, or url mapping) my subdomain to the order form?

Hi @Sam_Stone You can hyperlink buttons or links on your site to the shopping cart or orderform, or even set up a domain forward, but the customer would end up at the long orderform url, because our compliance status requires checkout (entering billing information) to go through our secure server, when using the Infusionsoft Shopping Cart or Orderform experience.