What method is used by Session Replay to monitor changes in a web application?

Session Replay utilizes the method of tracking changes in the DOM (Document Object Model) tree to monitor interactions and alterations within a web application. This approach allows Session Replay to capture a detailed representation of how users navigate and interact with a website in real-time.

Tracking changes in the DOM tree captures various user actions, such as clicks, form submissions, and modifications to page elements. This provides a comprehensive view of the user experience, helping developers and analysts understand how users engage with the application, identify issues, and ultimately improve the user interface and functionality.

In contrast, the other methods mentioned do not accurately represent how Session Replay operates. For instance, recording video of user sessions cannot provide the same level of detail regarding the changes within the application in the context of the users' interactions. Utilizing server-side logging lacks the granularity needed to capture real-time user behavior in an interactive manner, while employing user feedback forms focuses on subjective user insights rather than the objective tracking of user interactions within the application.