What is the biggest challenge commonly faced when using Power BI?

One of the biggest challenges users commonly face when working with Power BI is managing large and complex datasets efficiently. As data sources grow, optimizing data models and ensuring fast report performance can become tricky, especially for beginners. Many users also struggle with mastering DAX formulas, which are essential for creating dynamic, insightful reports. Enrolling in a structured Power BI course can be incredibly helpful in overcoming these challenges. A good course teaches data modeling best practices, DAX functions, and report optimization techniques, enabling users to work more confidently with larger datasets and build professional, business-ready dashboards.