Kevin Systrom, co-founder of Instagram, first spoke at ETL in 2011, just seven months after Instagram launched. Here, he returns to ETL nine years later to draw some new insights about the the startup's rocket-like growth. In an interview with Stanford professor of the practice and STVP faculty director Tina Seelig, Systrom reflects on the lessons he’s learned during the course of that journey, and also talks about his work on Rt.live, a new platform that aims to model the COVID-19 pandemic.