Amazon Corretto is a Java virtual machine (JVM) developed by Amazon, specifically designed for running Java applications on their cloud computing platform. It is based on the open-source OpenJDK project and includes features such as JIT compiler optimizations, garbage collection improvements, and security enhancements.

Amazon Corretto aims to provide developers with a reliable and efficient environment for deploying and scaling Java applications in the cloud. It offers several advantages over traditional Java virtual machines (JVMs) such as Oracle VM or OpenJ9, including:

1. Compatibility with existing Java libraries and frameworks: Amazon Corretto is compatible with most existing Java libraries and frameworks, making it easier for developers to integrate their applications with existing systems.

2. High performance: Amazon Corretto uses optimized JIT compilers that can generate highly optimized bytecode, resulting in faster application execution times.

3. Cost savings: By using Amazon's cloud infrastructure, developers can save costs associated with hardware and software development, maintenance, and upgrades.

4. Scalability: Amazon Corretto supports horizontal scaling, allowing developers to increase the number of CPU cores and memory resources dynamically based on demand.

5. Security: Amazon Corretto provides enhanced security features such as sandboxing, access control, and encryption, ensuring that applications are protected from unauthorized access and data breaches.

Overall, Amazon Corretto is an attractive option for Java developers looking to move their applications to the cloud while maintaining high levels of performance, scalability, and security.