The Marketplace/Fab and the Project File Link. What does it do exactly?

Hi, I just published my first pack and was wondering, both Fab and the marketplace require a link to the files of the pack you want to sell and I’m curious about what that does exactly.

Is this a permanent location in which everyone remotely downloads from, or is it a temporary staging area while they approve the pack?

Can I remove the files at this location once the pack is approved?

If I update the files there will that automatically update the files people download, or do I need to resubmit for it to update what people download?