New administration docs: High Availability
The High Availability overview is a good "concepts" style introduction to the topic, but we're still lacking details on how to make DC/OS itself, and service on DC/OS highly available.
High Availability (https://dcos.io/docs/1.8/overview/high-availability/)
How To: Make DC/OS Highly Available
How To: Make DC/OS Services Highly Available
The overview page can then be trimmed down to just concepts and disambiguation.
The administration page can define the capability possible with DC/OS.
The How Tos can show how to do these things on our currently supported platforms (AWS, Azure, On-prem).
Multi-AZ doc is great, but we also need a higher level directory that describes all the different ways to make DC/OS or DC/OS service HA and then Multi-AZ is one of the sub-pages with detail and instructions.