We have applications hosted in different data centers across the world.
Without specifically adding the hostname of the application to an application segment then tying that to a servergroup and connector group located closes to the application the user will use a connector that is closest to their location.
User in US access application in Germany.
User will use US connector to get to application in Germany.
The RTT between connector and app is over 100ms.
We have to manually set that hostname/IP within the app segment group and force it to use the connector in Germany in order to get the user connected to a connector with less then 1 ms RTT.