Which feature of RUM helps visualize latency issues?

The feature that helps visualize latency issues in Real User Monitoring (RUM) is the waterfall chart visualization. This tool provides a detailed graphical representation of how long different resources take to load during a user session. By displaying the loading sequence of various elements such as JavaScript files, images, and other resources, the waterfall chart enables users to pinpoint exactly where delays are occurring in the loading process.

For instance, if a certain script takes significantly longer to load than expected, it will create a visual delay in the chart, which can then be investigated further. This visualization not only highlights latency but also aids in understanding the overall user experience, as it encapsulates the time taken for the entire page to load. Ultimately, the waterfall chart is an invaluable component for diagnosing performance issues and enhancing the responsiveness of web applications.