Teemu Arina is a Finnish serial entrepreneur with 14+ years of experience as startup CEO. He is a professional keynote speaker on online collaboration and learning, with over 100 invited keynote presentations / year in countries such as UK, U.S., the Netherlands, Russia, Germany, Belgium and Italy. He is the co-author of Megasignals e-book series and co-author of Cloud Company, a book exploring the role of social technologies in organizations.