Google Cloud SQL serves as an excellent solution for hosting Relational Database Management Systems (RDBMS) in a cloud environment. It provides fully managed databases for MySQL, PostgreSQL, and SQL Server, handling essential maintenance responsibilities such as updates, backups, and scaling. This allows developers to concentrate on application development without the burden of intricate database management tasks. Cloud SQL guarantees robust performance and high availability for relational databases through automatic replication and failover mechanisms. Furthermore, new users are granted $300 in free credits to experiment with Google Cloud SQL and assess its functionalities for their RDBMS requirements.