Dashboard component types
Key Takeaway
Pick a dashboard widget type by the shape of the report data and the question the viewer needs answered.
A dashboard is a page of visual blocks that show Salesforce report data at a glance. Lightning Experience calls these blocks widgets, and Salesforce Classic calls them components.
How a dashboard is built
A dashboard is built from source reports, filters, and widgets. Each data widget gets its data from exactly one source report. Different widgets can use different source reports, so one dashboard can show several reports side by side.