Edition Front End pool and an Edge Server.
The external DNS records are configured as shown in the following table:

All users use the Skype for Business client. Some of the users use the Skype for Business client from non-domain joined computers.
You need to ensure that the users in the London site use the Edge Server in the London for authentication and the users in the Seattle site use the Edge Server in the Seattle site for authentication. The solution must minimize administrative effort.
What should you do?



