Drew Houston is the founder of Dropbox. Big Event Media/Getty Images for HumanX Conference Dropbox CEO Drew Houston plans to step down as CEO after 19 years in the role. Houston named Ashraf Alkarmi as his co-CEO and eventual successor in a memo to employees on Tuesday. He shared how he knew Alkarmi was the right person for the job. Dropbox CEO Drew Houston invoked an old and reliable piece of advice to choose his successor. Houston told employees in a Tuesday memo that Dropbox named Ashraf Al