Scott Dietzen, president and CTO of Zimbra, gave the third talk last Friday at Web 2.0 Expo Tokyo. Zimbra has been on the go for four years (so they are Web 2.0 pioneers), and embarrassingly I told Scott that I only found out about them very recently (sorry!). Scott's aim for this talk was to share the experience of having one of the largest AJAX-based web applications (thousands of lines of JavaScript code).