Web Application Proxy (WAP) Design

Diagram

With the following details:

Windows remote management must be enabled on ADFS/WAP servers for remote installation.
NATted Public IP, with Public name sts.domain.com (Federation Service Name)
The hosts’ file on the federation server proxy (WAP) will be configured. To resolve ADFS server name
DNS suffix: domain.com
Network connectivity between ADFS servers between Main and DR site.