Real user monitoring (RUM) is a performance monitoring process that captures detailed data on user interactions with applications, providing insights into actual user experiences and identifying performance issues before they affect a large number of users. By injecting code into applications, RUM collects metrics on load actions and user sessions, offering a comprehensive view of user journeys and helping teams identify areas for improvement. While RUM provides valuable insights, it also generates vast amounts of data, requiring effective query and visualization tools to quickly identify key information. However, RUM has limitations, such as its dependency on active user engagement and difficulty in establishing performance baselines, which can be complemented by synthetic monitoring. The integration of RUM with an all-in-one observability platform enhances visibility into user experiences, allowing organizations to trace performance issues back to infrastructure or application problems. An effective RUM solution should provide full session capture, session replay capabilities, and integration with business context data to understand the business impact of application performance, enabling teams to deliver better digital experiences.