I should mention that you can't run Oracle RAC on any "real" public cloud, because it doesn't play nice with SDNs and needs shared block storage. People have d

I should mention that you can't run Oracle RAC on any "real" public cloud, because it doesn't play nice with SDNs and needs shared block storage. People have done it with hacks (like VPN tunnels between hosts), but it's not performant and well, an unmaintainable hack. I've seen things like read-only single instance replicas of on-prem DBs, but uhhh. A stand-alone Oracle server isn't a reliable solution because patching = outage. So Oracle providing managed Exadata is a win for some (again, usually big) businesses. Oracle got a lot of companies hooked on proprietary DB features and rewriting can be painful or require spinning up a dev team for something in "maintenance mode". Even Amazon just fully got off Oracle a couple years go IIRC.