Power BI is a business intelligence tool developed by Microsoft. It is used to analyze data, build visualizations, and share insights with business users. It provides data acquisition, data transformation, data consolidation, design and visualization, and analysis of various types of data sources. Power BI also allows users to interact with data in real-time by using filters, slicers and drill-downs. With its drag and drop interface, Power BI enables users to quickly build visualizations and insights without any technical expertise. Using Power BI, users can export their findings to multiple common formats such as CSV, PDF, Excel, and HTML to be shared with colleagues or other users. In addition, Power BI also provides an API for third-party developers to create custom visuals, complex dashboards, and analytics integration.