The dashboard is a very important part of the back-end of the CMS. It's the first thing your client will see when he logs into the backend. In asgard, your modules can define a set of widgets that will be displayed on the dashboard. These widgets can be simple counts, tables, or pretty much whatever you want.
Widgets location are saved on a per user basis. Each logged in user with the correct permissions can re-arrange the widgets however he or she prefers.