Explore the world of mobile web development with ASP.NET, HTML5, and responsive design in this GOTO 2012 conference talk. Dive into the explosion of mobile traffic and learn how to create mobile-friendly sites and applications quickly using ASP.NET MVC 4's new templates. Discover the power of HTML5, CSS3 media queries, and jQuery mobile for crafting responsive designs. Gain insights on when to transition from a mobile site to a mobile application, and explore various frameworks and techniques to optimize your web presence for mobile devices. Through demonstrations and practical examples, master the art of creating semantic tags, implementing friendly URLs, and leveraging data annotations to enhance your mobile web development skills.