Google Cloud SQLGoogle Cloud SQL is a fully-managed database service that makes it easy to set up, maintain, manage, and administer your relational PostgreSQL and MySQL databases in the cloud. Google Cloud SQL offers high performance, scalability, and convenience. Hosted on Google Cloud Platform, Cloud SQL provides a database infrastructure for applications running anywhere.
The pricing is very much an important factor as to why we use this solution.
It's really cheap. It wouldn't be more than, I believe it's around 50 euro per month for running a cloud SQL.