Its most valuable feature is that it's scalable. I can start off with a base of a lot of data and move as much as I want and it's the same as if asked to do a lot of infrastructure changes.
Google Cloud SQL offers an easy setup and user-friendly interface for database users. It supports scalability for large datasets and provides strong storage and security features. While it excels in stability and supports databases like Postgres and MySQL, it has connectivity issues with external data sources and lacks comprehensive documentation. Security concerns exist due to public IP usage, and technical support often refers users to public documentation.