Payara
Payara is an open-source application server derived from GlassFish, designed for deploying and running Java EE (now Jakarta EE) applications. It provides a robust, production-ready platform with enhanced features, performance improvements, and long-term support compared to its upstream source. It is widely used in enterprise environments for hosting web applications, microservices, and APIs.
Developers should learn and use Payara when building enterprise Java applications that require a stable, supported, and feature-rich application server, especially for production deployments where reliability and security are critical. It is ideal for projects migrating from older Java EE servers or those needing Jakarta EE compliance with added tools like monitoring, clustering, and cloud integration. Use cases include financial systems, e-commerce platforms, and large-scale corporate applications.