Explore how to enhance a Gatsby site with dynamic functionality using Netlify Functions in this 1-hour 20-minute live stream tutorial. Learn to set up an Express API and write serverless functions to handle button clicks, enabling interactive features on a JAMstack application. Dive into topics such as custom commands, WebSocket implementation, API creation, HTTP headers, response data codes, and serverless function development. Follow along as the instructor demonstrates practical techniques for integrating these technologies, from initializing sockets to triggering sound effects and handling post commands. Gain valuable insights into building more interactive and responsive web applications using modern web development tools and practices.