DAX measure basics

All analytical expressions ranging from simple sums and averages to custom, complex statistical analyses should be implemented within DAX measures. Although it’s technically possible to utilize the default summarization property of columns for some basic measures, well-developed datasets should embed calculation logic into DAX measure definitions thus improving clarity and reusability.

The need for the rapid deployment of complex yet efficient and manageable DAX measures, queries, and security roles underscores earlier guidance regarding the value of an experienced Power BI dataset developer to deliver enterprise-grade solutions. Organizations are strongly advised to appreciate DAX as a functional programming language (not just Excel formulas) that is central to Power BI solutions and thus take steps to ensure that Power BI dataset developers possess the required knowledge and skills with DAX. These steps may involve certification exams, detailed technical...