Love "Brittleness of Replication"

With Cassandra, peer to peer replication is a big selling point. And Hadoop has distributing computing. MSSS has had peer to peer replication for quite a long time, but has it advanced?

If they had invested on making peer to peer in sql server solid, it would give it a multi-site HA, DR and scale-out strategy position. No, they follow the cluster approach, and even deprecate mirroring. We can only guess what it would have been.