Amazon Aurora is a cloud-based relational database service offered by Amazon Web Services (AWS). It is designed to be compatible with both MySQL and PostgreSQL, allowing users to easily migrate their existing databases to the cloud. Aurora provides high performance, scalability, and availability, making it suitable for applications that require reliable data storage. One of the key features of Amazon Aurora is its ability to automatically scale storage up to 128 terabytes as needed. It also includes built-in security measures, such as encryption and network isolation, to protect sensitive data. Aurora's architecture allows for quick recovery from failures, ensuring minimal downtime for applications.