With this Azure Quickstart, the PubSub+ can be deployed in either a standalone configuration or in high-availability (HA) redundancy groups for fault tolerance. In the HA configuration, if one of the message brokers fails or is taken out of service, the other automatically takes over and provides service to the clients of the router that is out of service. To increase availability, the message routers are deployed across three different Fault Domains.
The deployment and configuration tasks are automated by a template that you can customize during launch. You can also use the template as a starting point for your own implementation. The Quickstart includes a guide with step-by-step deployment and configuration instructions.