Amazon Aurora vs Google Cloud Spanner

Amazon Aurora is a MySQL and PostgreSQL-compatible relational database service built for the cloud, offered as part of Amazon Web Services. It provides up to five times the throughput of standard MySQL and three times that of PostgreSQL with automatic scaling, replication, and backup.

Cloud Spanner is Google's horizontally scalable relational database service that combines the benefits of traditional SQL databases with the scalability of NoSQL systems. It provides strong consistency and global distribution for mission-critical applications.