See relationships of layers, maps and apps at a glance

[MerrileeTorres]

I would be very helpful if we could see a schematic showing the relationship of dashboards, apps, maps, and layers/tables to easily see the bigger picture of what is being used, where and how.  Like in Access where you can see a visual that shows the relationship between tables.  For example, this way, you could quickly see  which tables and layers need to be updated to support a particular map, or which maps are supporting an app, or which maps, layers and tables support a particular dashboard.

[KennethLohr]

This would indeed be very helpful, I upvoted. 

In looking for how to do this, I found a script published by Esri to expose dependencies, it's for Portal though.  I was able to run it by swapping in my ArcGIS Online org URL (instead of a Portal URL) but no significant results were returned by the script.  Maybe it needs further modification to work with ArcGIS Online.

Also, I found this other script that apparently creates a graphical representation as you suggested, but it is also for Portal.  Being unsuccessful with the first, I hadn't tried the second.  Maybe your Python skills are better than mine and you could get it to work.  I agree though, it would be better if this were just baked into the product.    

[MikeHowle]

Something simple on the overview page of web maps showing what apps are using that map. And a list of maps that are being used in an application. Much like the current list of layers that are being used in a web map or web app. Add the relationships. 

[PeterHall]

I agree we need track these relationships for ArcGIS Enterprise as well as online (Table - Layer - Map - App - Viewer). Should be able extract using API so can be ingested into other systems to form a more complete picture of end to end data lineage.