What it must be like to be Dropbox founders Drew Houston and Arash Ferdowski right now.

On the one hand, they're running one of tech's greatest success stories: a company whose signature file-syncing software has swarmed large company IT departments in ways not seen since Apple introduced the iPhone.

On the other, Dropbox may be attracting more competition than it can handle. Amazon.com (AMZN -2.56%) is the latest to introduce file syncing via its Cloud Drive service, which was once intended to help the e-tailer compete with iTunes and Google's (GOOGL -1.23%) Play by creating a place to store digital goods such as music and movies.

Will Amazon's entry into the file-syncing market disrupt Dropbox? And what's the best stock play on cloud storage right now? Tim Beyers of Motley Fool Rule Breakers and Motley Fool Supernova answers these questions and more in the following interview with The Motley Fool's Erin Miller. Please watch this short video to get his full take, and then leave a comment to let us know which cloud computing stocks are on your radar and why.