Discover how to create progressive web apps with cutting-edge browser functionality using Expo for Web in this conference talk from React Day Berlin 2019. Learn to build applications that run natively on iOS, Android, and web platforms using a single codebase. Explore the capabilities of Expo and React Native for web in emulating native app functionality for progressive web apps. Gain insights into the practical applications, benefits, and integration with popular web development tools. Follow along with a live demo and understand how to overcome common React Native challenges. Delve into topics such as React primitives and the process of building both apps and websites efficiently.