Comparing PostgreSQL-Compatible Databases: From Amazon RDS to YugabyteDB

Another useful angle to look at the PostgreSQL-compatible database landscape would probably be fully open source (e.g. Apache licensed) vs. almost open-source (e.g. AGPL or commercial licenses that convert to Apache after a few years) vs. closed source. For a variety of reasons, many large organizations that seek to build an internal multi-cloud / hybrid cloud database-as-a-service platform strongly prefer fully open-source solutions.

One thing that I would find cool as a follow-up to this article would be something like a decision tree (I understand it would get very complicated, very fast, but it should be fun): I, as a developer, am using AWS/Azure and I need features X,Y,Z, tell me which database I should pick.

Probably even better if it were a model trained extensively on the documentation / features of each individual database and it would also give references to the answer (see how Bing does it).