Working between Audition and Premiere Question

Not really. I use Dropbox for moving stuff about, but you get some free space (1 TB it says here) from Adobe with a CC subscription, so you could use that, I suppose. The only thing you have to watch out for (and this is one reason that I like Dropbox, because it's inherent) is that you should always work from the local copy of the file, and not try to save anything back to the cloud directly - that invariably fails, because really, the connection is about as reliable for most people as a piece of wet string. So if you want to send stuff back, do it as a file transfer from your machine, rather than as a direct cloud save. And obviously, don't trust the single copy of anything to any cloud storage!