This article provides a step-by-step guide on how to build a live-streaming application with face filters using Agora Video SDK and Banuba Face AR SDK on iOS. The tutorial covers the development of an app that includes features such as user account creation, virtual room setup for hosting live streams, audience joining, face filter usage during streaming, text messaging within virtual rooms, and user search functionality. It also provides information on setting up Firebase for authentication, analytics, and user management.