If you build sites with Silverlight and have been watching all the HTML5 hype with bemused skepticism, this session is tailored for you. I'll show you how Vertigo approaches modern web development, and more importantly, how we talk to our customers about it. I'll cover how we balance HTML and Silverlight, the tradeoffs of going HTML over native for mobile apps, and strategies for ideal compatibility across many browsers. We'll analyze the latest browser statistics, review the state of the spec, and discuss how to answer clients who want rich sites, but want it "HTML5 compatible". With all the buzz around this topic, you have a good reason to be skeptical; I want to help you be more informed about where to invest your energy and grow your practice.