What is MultiPod?
ACI MultiPod was first designed to enable the spread of ACI Fabric inside a building (into two or more Pods), let’s say in two rooms at different floors, without the need to connect all the Leafs from one room to all the Spines in the other room. It was a way of simplifying the cabling and all that comes with building spread CLOS topology fabric stuff.
MultiPod also saves some Leaf ports giving the fact that Pod to Pod connection through Multicast enabled IPN network connects directly to Spines.
People soon realized that MultiPod will be a great solution for a dual site (or more than dual) Datacenter with the ability to have single management with a single ACI Fabric stretched across two or more locations that are connected with an IP connection not too long so that enables RTT latency of less than 50msec with Multicast support. Not too simple but it seems not too demanding for most cases.