Power BI dataflows enable data transformation logic to be defined and reused by Power BI developers. They are ETL (Extract, Transform, Load) operations inside Power BI. Centralized, reusable data tables that can be used across several Power BI reports and datasets may be created with the help of dataflows. As a result, the data preparation process is streamlined, duplication is decreased, and data consistency is encouraged. Dataflows improve productivity and dependability for developers by streamlining data management and guaranteeing that all reports use the same source of truth.