Can I use Arduino for dev and build away from it?

I'm considering getting an Arduino board for many different projects and I was wondering whether it is possible or even the point of the Arduino to use it to experiment with a project and then build a board from scratch once it works?

In other words just use the Arduino for the development part of the process and once happy, build a pcb with just the necessary components on.

How straight forward an option would this be and would it be considered to be the norm?

Thanks :)

The keyword to use in your search is "standalone"...

Thanks :)

would it be considered to be the norm?

Yes I would. In fact many projects go straight to standalone with a program header. This project has schematics for both versions if you down load them.