Power BI Desktop lets you build advanced queries, models, and reports that visualize data. With Power BI Desktop, you can build data models, create reports, and share your work by publishing to the Power BI service.
Microsoft Power BI is used to find insights within an organization's data. Power BI can help connect disparate data sets, transform and clean the data into a data model and create charts or graphs to provide visuals of the data. All of this can be shared with other Power BI users within the organization.