This is the scenario,
I have an application in a centralized location, let’s say centralized location is A. B is the sub organization which is accessing an application which is hosted in the A. (Access granted via internet.)
I need to host same application in the B (sub organization) and this should be accessed when Internet is down or not available as we can synchronized later when Internet is available.
This can be done using DNS round robin ??? Or any other possible scenarios ? please explain …!