A dashboard, in Web parlance, could be an entire portal or just some widget on any page. The purpose of a dashboard is to provide contextually related information, something like "just-in-time" information. One of the Google ads on this website happens to provide a nifty dashboard
, albeit useful only in the U.S. It's a map of the states that responds to clicks on various states. A click gets you a display of the percentages of that state's energy requirements as supplied by the various energy sources.