Aygul Zagidullina delivered the talk “Leaving No-one Behind: Building Apps for The Next Billion Users” at the Codemotion Milan 2018 conference. We interviewed Aygul, asking her these questions: What makes the next billion Internet users so important? How do they differ from the current users? What are the main technical challenges of software development for emerging countries? Do you feel developers should care more about inclusivity toward their end users, and less about the latest cool technology? You hold a PhD in Quantum Chemistry. How is this related, and helped you in your current job? You are heavily involved with communities. In your opinion, why should one take part in them?