You have an application that for legal reasons must be hosted in the United States when U.S. citizens access it. The application
must be hosted in the European Union when citizens of the EU access it. For all other citizens of the world, the application must be hosted in Sydney. Which routing policy should you choose in order to achieve this
Geolocation routing is used in allocating resources for different traffic sources originating from different geographical locations. Consequently you are allocating a different resource to handle a different DNS query based on the location/origination of the DNS query. In the above example, you will need to for example to route all queries from any other place in the world that is not US or Europe to a load balancer for Sydney. Your application in their different locations using geolocation routing would have to be adapted and localized to the region so as to serve the audience there
