FYI, the Aiven database service allows you to run multiple database per instance. HA plans for Aiven start at US$200/mo and are available in multiple clouds including AWS and Google, see https://aiven.io/postgresql#comparison
First to hear about Aiven and you guys released pg hoard. Right? Interesting offerings. Are you connected to upcloud? (Both are based in Helsinki from what I could gather)
Yeah, PGHoard is the PG cloud backup solution we initially developed for Aiven and later open sourced. It's now used in a lot of other environments as well.
Aiven services are available on UpCloud and we're friends with the UpCloud people as we're both based in Helsinki and have met at various events, but there's no other connection between the companies.