I am trying to improve accounting process for version management and I am thinking of a way to automate an email notification to admin anytime an editor make a change/edit on a versioned dataset served as a feature service. Is there an out-of-the-box solution for this or anyone could point in the right direction please?
There are no web hooks for any of these operations, but the version infos method of the version management service will allow you to see the last reconcile date of a version.
ArcGIS Workflow Manager can do this out of the box as a step in a workflow, and Workflow Manager will also offer a lot more to help you manage your production workflows, otherwise you will need to write a custom tool for this.