App-based folder organisation in iCloud I am trying to migrate my local files from my mac filesystem onto iCloud folders such that I can view and edit files using Pages and Numbers seamlessly from either my the local apps or the web interface. However something that's always confused me about iCloud is the location of these files. Does iCloud force me to put spreadsheets that I want to be able to edit from Numbers in the actual Numbers folder? 

So for instance if I have client work that could be both documents and spreadsheets, in my local filesystem I would have something like


Client A


SS1.xls
SS2.xls
Letter1.doc
Letter2.doc

Client B


SS3.xls
SS4.xls
Letter3.doc
Letter4.doc



Instead iCloud would now force me to adopt the following structure:


Numbers


Client A


SS1.xls
SS2.xls

Client B


SS3.xls
SS4.xls


Pages


Client A


Letter1.doc
Letter2.doc

Client B


Letter3.doc
Letter4.doc




Am I missing something, or is this just what iCloud forces you to do?
You aren't forced to use app-specific folders, it's just the initial setup. Why not just store things outside the app folders by dragging your existing file structure into the drive folder itself?

On OS X - iCloud drive works just the same as Dropbox. You get a folder and it syncs. Apple makes special folders for some apps and categories, but you don't have to use them. 

On iOS - in the settings app under iCloud - enable the toggle that says "Show on Home Screen" for iCloud Drive and you can browse away just like Dropbox (and other file sync apps allow).

Also - finder tags are now portable across devices, so you could use tags as well to help categorize client files no matter where they are stored on the filesystem.