The article explores the evolution of creating universal applications that run across multiple platforms using a single codebase, highlighting the advancements in technology that make this feasible today. It discusses the benefits of universal apps, such as reduced operational costs and improved team efficiency, while also sharing lessons learned from past experiences and the importance of careful architectural decisions. New tools like Solito and Expo Router are emphasized as key enablers for successful universal app development.

Zalando is modernizing its mobile app by integrating React Native into its existing architecture, allowing for gradual migration and cross-platform experiences. This approach utilizes their internal Rendering Engine framework to enhance development speed and efficiency while maintaining compatibility across both mobile and web platforms.