 Organisations typically use RUM to test changes within the production environment, or to anticipate behavioural changes in a website or application by using A/B testing or other techniques.As technology shifts more and more to hybrid environments like cloud, fat clients, widgets, and apps, it becomes more and more important to monitor the usage of applications from within the client itself.Real user monitoring is typically "passive monitoring", i.e., the RUM device collects web traffic without having any effect on the operation of the site.