[paddybyers]

We've been experimenting with Liftbridge at a range of scales and workloads, and clusters that are distributed across a single region perform very well. However, it's not really suitable for operating a cluster distributed across multiple regions because the latency adversely impacts the bandwidth of the Raft protocol that's used for cluster-wide coordination; this impacts the rate at which streams can be created, and the rate at which changes to In-Sync Replica sets (ISRs) can be propagated. As suggested, a federation of clusters, each covering a single region, would be required.