Am I missing something here? It’s an open source Postgres extension with a permissive license. Azure has had hosted Postgres databases for years, as have all the other major cloud providers. I’d be concerned if they were ecosystem locking the extension, but that doesn’t appear to be the case.

The motivation for this extension, hilariously, is likely to run AI. With how long requests can take due to inference, durable execution is useful to avoid losing data mid-request and needing to restart the whole thing. This seems useful outside of that though, for other kinds of long-running requests.