In this step you decide what type of broker deployment you want. You have the choice of a Single-instance broker for deploying one broker in a single availability zone, suitable for development. You have the choice of an Active/standby broker pair, which provides high availability by deploying two broker instances in two AZs. You can choose a mesh network of 3 single-instance brokers for scale and availability, or a mesh network of active/standby brokers, which is a set of three interconnected active-standby pairs, for even better availability and durability.
For this example, select the Active/standby broker, and select next: