What is the purpose of the QoS userInteractive mechanism and in what situations is it used?

The QoS (Quality of Service) mechanism userInteractive in iOS is designed for tasks that directly affect user interaction with the app and require maximum priority and minimal latency.

userInteractive is used for operations that must be executed instantly, such as:

• Updating the interface in response to user actions.
• Animations and transitions.
• Input event processing.

This QoS level guarantees that tasks will be executed with the highest priority to ensure a smooth and responsive user experience.