In Power BI, what are themes used for?

Themes in Power BI are utilized to apply a consistent look and feel to reports, which enhances the visual appeal and supports branding efforts. By using themes, users can define colors, fonts, and other design elements across various report components, ensuring that the visuals are cohesive and align with organizational standards or preferences. This uniformity allows viewers to easily interpret the data, creates a more professional presentation, and improves overall user experience by making reports visually engaging.

While data source connections, dynamic filters, and report automation are essential aspects of Power BI functionality, they do not relate to the visual styling or thematic consistency of reports in the same way themes do. Therefore, the use of themes strictly pertains to aesthetics and not to data management or manipulation capabilities.