What does a drill-through page in Power BI primarily allow?

A drill-through page in Power BI is designed to provide users with the ability to navigate to more detailed insights that are specific to a data point or a selected category in their report. This functionality enables users to "drill through" to a new page that offers focused visualizations and data analysis related to the highlighted data context.

For example, when a user selects a specific segment of data in a report (like a particular region's sales data), they can activate the drill-through feature to access a dedicated page that presents deeper insights, such as trends, key performance indicators, or additional breakdowns pertinent to that selection. This enhances the analytical capabilities of Power BI by allowing users to explore data at varying depths and gain a comprehensive understanding of their metrics.

The other options do not align with the primary function of a drill-through page. Exporting data to Excel is a different feature in Power BI that facilitates data manipulation outside the platform. Displaying a single visualization could occur on any report page and does not encapsulate the essence of drill-through functionality. Summarizing multiple datasets is more related to data modeling and aggregation rather than the focused exploration afforded by drill-through pages.