I was looking to configure a single ADFS farm with 3 servers located in different parts of the world allowing authentication to Office 365. Our datacentre management tool (Akamai) will be used to direct users to the appropriate server based on Geolocation of IPs.
It's been suggested that instead of a single farm, I create 3 separate farms with a single server in each. This means we wouldn't need NLB and there would be less replication traffic between datacentres.
Is this the best solution? Any things I should be aware of? Would the farm names all have to be different?