This article compares managed PostgreSQL providers including AWS RDS, Google Cloud SQL, Azure PostgreSQL, DigitalOcean, Heroku, and ElephantSQL. The comparison is based on various factors such as high availability, auto-scaling, Postgres versions, Postgres extensions, automated backups, monitoring and metrics, security, costs, and more. It provides an overview of each provider's capabilities in these areas and suggests that the choice between providers depends on specific needs and budget constraints. The author also mentions Hasura's compatibility with all these providers.