Power BI is a power analytics tool that allows us to visualize data. We can create reports in Power BI using Dynamics 365 data.
Reference:
https://community.dynamics.com/crm/b/magnetismsolutionscrmblog/posts/how-to-connect-power-bi-to-dynamics-365
https://docs.microsoft.com/en-us/power-platform/admin/use-power-bi