The @Observable macro eliminates boilerplate code by automatically making all properties observable without @Published wrappers. It provides better performance through fine-grained observation and reduces memory overhead compared to Combine-based ObservableObject.

@Observable
class UserProfile {
    var name: String = ""
    var email: String = ""
    var isLoading: Bool = false
    
    func updateProfile() {
        isLoading = true
        // API call logic
        isLoading = false
    }
}

struct ProfileView: View {
    @State private var profile = UserProfile()
    
    var body: some View {
        Form {
            TextField("Name", text: $profile.name)
            TextField("Email", text: $profile.email)
            
            if profile.isLoading {
                ProgressView()
            }
        }
    }
}

Why This is a Best Practice

This approach reduces cognitive load by removing the need to decide which properties need @Published, prevents common bugs from forgetting @Published annotations, and offers improved performance since SwiftUI only updates views when specific observed properties change rather than when any published property updates.