Fly.io, launched in 2017 and headquartered in Chicago, is a cloud infrastructure company that specializes in offering a platform for running containerized applications across a global network of servers. Since its founding, Fly.io has grown rapidly and attracted significant funding from investors. The company is still private but has raised $40.5 million to date and is backed by Andreessen Horowitz and others.
In addition to its core compute offerings, Fly.io has made efforts to simplify the process of deploying and managing databases in the cloud. Postgres on Fly is a regular Fly.io app, with an automated creation process and some extensions to simplify management. It relies on building blocks available to all Fly apps, like flyctl, volumes, private networking, health checks, logs, metrics, and more. It is relatively trivial to enable multi-region PostgreSQL with read replicas.
At one point apparently managed Redis was offered as a separate product, but now it is still possible to run Redis on Fly as a standard app, but you have to manage it yourself.
The Fly.io blog is both informative and hilarious, excellent reading. This website is hosted on Fly.io, but there is no special consideration or sponsorship currently. If that ever changes, that will be fully disclosed here.