Power BI is used to build dashboards and visualizations for finding business insights from the data. Power BI can connect to data from different sources, transform, clean the data, and make visualizations to understand the hidden and underlying aspects of data. These workbooks and dashboards can be shared with other Power BI users within the organization.
Power Bi is used by companies to tell the stories through the visualizations and to analyze the different scenarios. Power BI is used by sales and marketing departments to analyze data and create reports.
If you are interested to learn Power BI, I would recommend this Power BI Certification program by Intellipaat.
You can watch this video on Power BI Training to get started with Power BI: