Affiliate Marketing Secrets

I’m planning on creating my own business website, but within that site I want an Amazon Affiliate store. If I’m making money from my site from other things and running it as a business what happens with any money I get from the Amazon affiliate program?
Does the money from that count as earnings (and profit) for the business or is it a separate private income? If the money earnt from that is in Amazon gift vouchers rather than actual cash does this change things?
Thanks.

I am looking to apply for an ABN because it is necessary to have one to receive payments from various affiliate marketing websites.
I am not sure what to put this business under. It asks if I have an enterprise established in Australia.
What is the deal? Does a website count as an enterprise?
There are supposed penalties to giving incorrect information in this form so I want to get it right. At the same time this is made as confusing as possible so it isn’t really fair that penalties apply.