Ride-hailing service Careem, the “Uber of the Middle East,” experienced expansion so dramatic that it monitored its growth target every 15 minutes. Was this a fabled startup unicorn? But doubling the size of the company every six months took its toll. Professor Shikhar Ghosh discusses how the founders approached a number of critical organizational and cultural issues to keep its 4 million customers satisfied. Cold Call distills Harvard Business School’s legendary case studies into podcast form. Hosted by Brian Kenny, the podcast airs every two weeks and features Harvard Business School faculty discussing cases they’ve written and the lessons they impart. Subscribe on iTunes or wherever you get your podcasts. Listen to an episode at www.hbs.edu/coldcall.