What does DAX stand for in the context of Power BI?

In the context of Power BI, DAX stands for Data Analysis Expressions. It is a powerful formula language designed specifically for data manipulation and analysis within Power BI, Excel, and SQL Server Analysis Services. DAX is used to create custom calculations and aggregations in reports and dashboards, allowing users to perform complex data analysis on their datasets.

DAX functions enable users to create measures, calculated columns, and tables, enhancing the analytical capabilities of their reports. This means users can perform operations like filtering, aggregating, and performing calculations dynamically based on the data being analyzed. The use of DAX enhances the interactivity and insight generation from data, making it an essential feature for anyone using Power BI for business intelligence and data analysis.

The other choices do not accurately represent the capabilities and purpose of DAX within Power BI, as they refer to concepts that do not exist within this context. Data Aggregation Extensions and Dynamic Application X do not relate to the functionalities provided by DAX, nor does Distributed Access Exchange align with the analytical focus of DAX in data modeling.