In groups with item update capability enabled (https://doc.arcgis.com/en/arcgis-online/share-maps/share-items.htm ) more members of the group can update an item. Is it possible to see/track who made the latest update of an item? (not data-update, but for instance the latest modification of an web application)
Have you considered enabling editor tracking?
To enable this go to the item details page for your hosted feature layer and under the settings tab check the box for "Keep track of who created and last updated features"
This will add fields which will record the username and timestamp for when features are created and their most recent update.
Thank you, Katie, for your answer. I am not interested in tracking the changes in data, but changes in the configuration of the app. We are a team of people working on our apps, and it would be nice if we could see who made the last change (for instance put a new widget to an application).