What are the different types of dashboards in Salesforce?

There are four types of dashboard components in Salesforce:
1. Table: It is used to show a set of report data in column form.
2. Chart: it uses when you want to show data graphically.
3. Gauge: It uses when you have a single value that you want to show within a range of custom values.
4. Metric: It uses when you have one key value to display.