The real magic of an Android app happens in the UI layer. It's more than just presentational: it's about organising flows, exposing data and handling user actions. A well architected UI layer does this in a way that's efficient, scalable, maintainable and testable.

In this talk we will learn the intricacies of UDF architecture (Unidirectional Data Flow) and several strategies for handling UI state in a consistent manner. I will demonstrate how to create the magic using Kotlin + Coroutines + Flows + Compose.