The article presents five free solutions to host your PostgreSQL database. These include Neon, Fly, ElephantSQL, Amazon RDS, and Render. These free tiers are suitable for side projects, MVPs, experimenting with Postgres, or learning Postgres. The providers were not added in any particular order. Each provider offers different features such as automatic scaling, high availability, automated backups, and more. It is also mentioned that Heroku is deprecating their free Postgres tier on Nov 28, 2022, and provides a guide to migrate your Postgres database from Heroku to one of these providers.