<p dir="ltr" style="line-height: 1.38; margin-top: 12pt; margin-bottom: 12pt;">[size= 11pt; font-family: Arial,sans-serif; color: #000000; background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap]Power BI developers utilize DAX (Data Analysis Expressions) for advanced calculations. They create measures and calculated columns to perform dynamic aggregations, time intelligence calculations, and advanced business metrics. Functions like CALCULATE, FILTER, and SUMX are commonly employed to build complex formulas. Power BI developer also leverage variables within DAX to make calculations efficient and readable. They conduct performance testing to optimize calculation speeds. By combining DAX with hierarchical data modeling, developers deliver tailored analytical solutions that address specific client needs while ensuring performance and accuracy.[/size]