Hi Jessica,

In Reactive there's no Ajax Refresh, this is due to the way Reactive works, as the name implies 'Reactive' automatically reacts to any variable change.

In traditional we always need to refresh the screen but in react the screen adaptation is done automatically like in mobile.

Here's a link explaining the main differences between the two technologies and how it works in OutSystems.

Differences to consider between Traditional and Reactive Web Apps - OutSystems 

Best regards,

Ricardo Pisco.