How to setup a CMS as a backend for iPhone app

Question

I would like my iPhone app to get dynamic content off the net. This content should be managed using a CMS. I would like to know in particular if I can setup Drupal or Joomla or

Answer 1

Depending on the data-complexity, perhaps willing a CMS into being a data-store or simple API is overkill when you can leverage file storage services like Google Drive/Apps to GET/POST spreadsheets or other documents in JSON, among other formats.

Is it possible to use Dropbox, Google Drive, Skydrive, etc. as a server space?