Did you ever have a web page that would not display properly? HTML5 is designed to address this issue along with many more but how does it differ from HTML 4?

However, in the past several years, HTML+JavaScript (Ajax) and now HTML5 have created a highly compelling framework to build these applications, and for a large number of web productivity apps ...

While HTML5 has anchored the open web platform, the platform itself has increasingly become bigger than just HTML, Jaffe said. So the W3C is working on security, performance, and streaming.