In May 2019, Airtable released a new field type called "Last Modified Time". This allows for a simpler way to trigger on an updated record. Instead of having to use the Compare 2 Fields option, you can simple create a Last Modified field and use this new feature.
Note: This only works in Single Record Update Trigger. For Bulk Trigger, will still need to use the Compare 2 Fields approach, but you are able to utilize a Last Modified field as your monitoring field in that scenario.
Note: The option to set a Last Modified timestamp is not available in this mode so as to not create a cyclical loop of triggering this again.
Note: Be very careful to avoid cycles. If you perform an update on the same record, it's last modified may get updated, which will then trigger this again and possibly go into a never-ending loop.