Build a Conversational UI with Nexmo In App Messaging

The tutorial reviews Apple's new feature Safe Area Layout, introduced at WWDC 2017, and its use in creating a basic conversational user interface with Nexmo In-App Messaging. The Safe Area Layout provides a simplified way to map Auto Layout constraints to views, making it easier to create flexible layouts without UIKit bars. To implement the tutorial, developers need to set up a Vonage API account and a virtual phone number, then create an iOS project with the deployment target set to iOS 11 or higher. They add functionality for two outlets and one action in ViewController.Swift, and control-drag UI elements onto the view controller. The tutorial uses Nexmo In-App Messaging's cross-platform SDKs to integrate messaging experiences into mobile applications. Developers can create a conversation, user, and join the conversation using the Nexmo API, then connect the view controller with the controller, log in the user, send text events, and receive new events.