The experience of primary mobile screens being a bank of app icons that lead to independent destinations is dying. Instead, the idea of an app as a publishing tool with related notifications containing content and actions is becoming more important. This shift requires designers to rethink their approach, focusing on systems rather than individual apps or destinations. The concept of cards is emerging as a key design pattern, where content can be presented in a way that's personalized, ranked, and context-aware. Cards can come from various sources, including apps, websites, and even external services like vending machines. This paradigm shift has significant implications for businesses, product design, and user experience, offering opportunities for better discoverability, personalization, and interaction. As people interact with cards presented to them, the system will learn and adapt, creating new competitors and changing who you might think you're competing with. The key takeaways from this emerging trend include designing systems rather than destinations, focusing on responsive design beyond screen size, prioritizing notifications and actions within them, integrating with other services, and embracing a trial-and-error approach to figure out what works and fails.