Learn to build and deploy a full-stack real-time chat messaging application with authentication and SMS notifications in this comprehensive video tutorial. Develop a fully responsive Medical Pager featuring direct and group chats, emoji support, reactions, built-in GIF functionality, message editing and deletion, and specialized commands. Gain hands-on experience working with Stream, a leading chat messaging platform, to create scalable and customizable chat applications using their APIs. Follow along as the instructor guides you through the entire development process, from initial setup to deployment, covering topics such as client-side and server-side authentication, client-server communication, channel creation and management, search functionality, and integration of Twilio SMS notifications. By the end of this 3-hour and 36-minute tutorial, you'll have built a feature-rich chat application and gained valuable skills in full-stack development using modern web technologies.