I am trying to use some Living Atlas services in some applications. I would like to be able to set an area of interest and if possible clip a certain area so that users can only view that AOI. Is there a way so that users cannot pan out of a certain extents?
You can set the AOI if the layers are saved in a web map, you can then access the settings of the web map and edit the extent to the desired location.
You have a few options to set the extent when in the edit/set extent options outlined here - Configure map—ArcGIS Online Help | Documentation
I have included a screenshot of the UI below with the options on the left panel:
There is a way to set the limit for zoom-out extent for a hosted feature service by setting the visible scale range in ArcGIS Online. This allows you to determine and change the scale at which a layer in your map is displayed, but this will not prevent the user from being able to pan or zoom in and out on the Web map.
Blend modes in Map Viewer and use a 4.x web app like Experience Builder, Dashboards or Instant Apps.