SwiftUI applications often fail not due to user interface issues, but because of complex dependencies and unclear ownership of objects. Problems like tangled dependencies, objects living too long, and recreated services can hinder the app's performance and scalability. The solution lies in designing a clear and predictable dependency graph, which defines the lifetimes and scopes of objects within the application.

This approach ensures that every object has a clear owner, lifetime, and scope, preventing memory leaks and enhancing testing capabilities. By structuring the architecture into layers such as AppContainer, FeatureContainer, and ViewModel, developers can manage the flow of data and ownership effectively. This structured approach allows for predictable memory management, clean teardown, and easier testing, leading to more maintainable and scalable SwiftUI applications.

As SwiftUI continues to evolve, understanding and implementing a well-designed dependency graph becomes crucial for developers to build robust and long-lasting applications.