Cockroach Labs has launched the first truly scalable Serverless SQL database, which is available for free. The Serverless architecture allows thousands of virtualized CockroachDB database clusters to be hosted on a single underlying physical CockroachDB database cluster. This enables efficient packing together of data from multiple tenants in a shared storage layer while maintaining security and isolation. The multi-tenancy support is achieved by isolating the SQL layer in per-tenant processes, along with transactional and distribution components from the KV layer, while the KV replication and storage components continue to run on shared storage nodes.