Guide for Real User Measurement in the Workplace
There is a strong correlation between page load time and human behavior. If users cannot engage quickly with sites and apps, their user experience suffers and they will take their business elsewhere. While the focus on the back end (server) is on stability and scalability, 80 to 90 percent of page load time is spent on the front end (browser).
By measuring from the user’s browser or app, RUM quantifies the correlation between page load time and user engagement, and shows where to optimize performance for more positive outcomes.