The Banking app (Objective C) and Banking app (Swift) sample demonstrate the SDK being used in a real-world scenario. This sample will help you get started with Skype for Business SDK API. It uses the ConversationHelper and ChatHandler classes to integrate Audio/Video and text chat features into the sample application.
The Guest meeting join sample provides further technology details of how to join a guest meeting, start chatting, and connect to the audio/video stream of the meeting.