Drew Houston is the co-founder and CEO of Dropbox. Under his leadership, Dropbox has grown from a simple idea to a service used by over 700 million registered users globally, with a valuation exceeding $9 billion. Drew has led Dropbox through multiple phases, from explosive viral growth, to battling all the tech giants at once, to reinventing the company for the future of work. In our conversation, he opens up about: • The three eras of Dropbox’s growth and evolution • The challenges he’s faced over the past 18 years • What he learned about himself • How he’s been…