Dashboards

This give a visual representation of your data in the report under changing business conditions or criteria.

Thus, you can make decisions based on the real-time data you’ve gathered with reports. 

Details - 

https://www.youtube.com/watch?v=HBpBRF-bLZU

https://www.youtube.com/watch?v=zSs0VV4rMhs

Reference - https://help.salesforce.com/s/articleView?id=sf.rd_dashboards_overview.htm&type=5