Benefits as compared to what? Off the top of my head: - Compared to a single Postgres instance, you get better availability for reads and writes - Compared to

Benefits as compared to what? Off the top of my head: - Compared to a single Postgres instance, you get better availability for reads and writes - Compared to a master-slave failover process, you get automated failure recovery without the risk of split-brain or lost writes. - Compared to a NoSQL database, you get strong consistency, and all the powerful SQL support that Postgres provides. The cost is higher latency and lower throughput for both reads and writes.