A dashboard is graphical representation of a report. Dashboards will show data from the source report as a graphical component, which can be charts, gauges, and so on. The components provide a snapshot of key metrics and performance meters for your organization. You can use this when the management is interested to know about the numbers and a comparison based on same fields. A user can see all the details in a dashboard whether he has access to it or not, but once he drills down to the report, he will get only those records to which he has access. Dashboard components can be charts, tables, gauges, metrics, or any other component that you can create with Visualforce. A description of each component is as follows: