Where can I find out more? All I see on their marketing site is "database containers" which I interpreted as little more than a container that happens to run a database, not as something that manages backups, point-in-time restoration, multi-az failover, upgrades, and all the other things that RDS has built in that many folks would otherwise prefer to have an (expensive) postgres specialist setup and manage for you.

Dang, sorry about that: https://www.aptible.com/enclave/

That page needs some love, thank you for the solid comment. I think the features we list cover your comments, but let me know if you have specific questions or other features you'd like to see!

Source: am Aptible CEO