Difference between various url domains for app integration

[Jesse]

I can't find a helpful reference guide that clearly explains the difference between various url domains that one can use to integrate and link various apps together. For Survey123 alone I've seen all these examples:

• https://survey123.arcgis.app
• arcgis-survey123://
• https://survey123.arcgis.com/share/

What is the difference between all of these? When do I use one vs. another? This post comes the closest to explaining but the language is pretty confusing.

[RobertBorchert]

In part it depends on what service you are  using.  for my organization using Enterprise Portal the url starts like this

arcgis-survey123://?itemID=<surveyNumber>

If you open Survey123 from the web  

https://survey123.arcgis.com/

and sign in you should see all surveys you own.

Select the survey you want.  On the very right in the green bar select the Sharing Icon

When selected you should see a URL to launch the Survey, a QR code that can launch a survey, and a link to the survey in the browser. 

[Jesse]

Thanks for your reply, Robert. It doesn't quite explain the difference between each domain, though. Is the difference basically:

• "https://survey123.arcgis.app/?itemID=..." and "arcgis-survey123://?itemID=..." are specifically designed to open the survey in the mobile app?
• "https://survey123.arcgis.com/share/..." is specifically for opening in a browser?

If so, I still don't get when it's appropriate to use one or the other mobile app url domains.