You misunderstood me, I think. Our clouds aren't connected. The partitioning problem exists within each data center (eg., Digital Ocean). So federation/shovel

You misunderstood me, I think. Our clouds aren't connected. The partitioning problem exists within each data center (eg., Digital Ocean). So federation/shovel is probably not the solution. SQS is far too simple for our needs. No idea what Azure is, but if it's SaaS the latency will likely be too high. We need local performance.