Regarding Service Hubs

Hi Team,

As per the service hub documentation .
There will be 2 urls

*There are two different variations of Hub-specific DID Document Service
Endpoint descriptors, one that users associate with their DIDs, and another
that Hosts use to direct requests to locations where their Hub
infrastructure resides.*

I am not able to picture it in my mind properly . Could someone please help
me to understand this in a better way and it would be great if someone
would share information like how these service hubs will ease the processes
in future. Any real life example ?

Regards
Sethi Shivam