Recently I was working on a SharePoint project for a client with offices throughout the globe, with key offices in UK, North America and Australia.

They had one SharePoint environment in each region.

For the Australian SharePoint farm we wanted to start authenticating users via ADFS.

Our client’s only ADFS environment was in the UK though and one of the key concerns I had was how long it would take to authenticate users to the UK given the high network latency, and the fact that there is pretty much nothing that can be done about the latency.