The document discusses different approaches to integrating Lync with Windows 8 Metro apps. It analyzes using Lync with a Metro app while keeping the Lync client running locally in UI suppression or automation mode, building a custom VoIP stack, using the Lync SDK with a desktop app in UI suppression or automation mode, or using the Lync Web API with limited features. Each approach has benefits and drawbacks in terms of features supported, UI control, and deployment options.