DAX (Data Analysis Expressions)

DAX (Data Analysis Expressions) is a formula language used in tools like Microsoft Power BI, Excel Power Pivot, and Analysis Services to create custom calculations and aggregations. It enables users to define complex formulas, measure data trends, and build dynamic reports by manipulating data models. Think of DAX as a way to tell the software exactly how to analyze or summarize data beyond basic sums and averages, making it possible to generate insights, perform calculations, and answer specific business questions efficiently within these analytical environments.