The document discusses the capabilities of the web and how it can be used as a development platform. It notes that the web can now support graphics, animation, location services, device orientation, real-time 3D, camera control, messaging and more. The web allows for cross-platform development, open source work, cloud deployment and easy updating and sharing of content without separate apps. While JavaScript performance was once an issue, tools now exist like PhoneGap that allow hybrid development for high performance while keeping an HTML5-first approach.