This collection on digital media highlights the ecosystems that are shaping child and family interactions with digital media, its effects on children, and the promise that digital media may have in creating opportunities. Part 3 reflects how well-designed technologies have the potential to bend the arc of child and adolescent development and wellbeing toward opportunity. By understanding whether digital media are designed to be helpful tools, with a respect for children's unique ways of interacting with the world, versus commercial tools that extract children's and teens' time and attention, pediatricians will be able to advocate for improved technology design. Lessons learned from these breakthroughs can inform the gaps and shape next research steps that are as future-facing as pediatric providers. In doing so, pediatricians will be equipped with the information and tools to provide the best anticipatory guidance around digital media to families.