CSS AG modernized its Swing-based ERP system, eGECKO, with Vaadin Flow—migrating 2,600+ modules to a secure, scalable, browser-based Java solution.

Vaadin is a platform for building web applications with Java. Readers can learn about Java web development, UI components, and web application architecture. With tutorials, documentation, and community support, Vaadin offers resources for developers interested in creating modern and scalable web applications.

Vaadin

CSS AG migrated its Swing-based ERP system, eGECKO, to Vaadin Flow over a 4.5-year project involving 25 developers and 2,600+ modules. The Java-first framework allowed the team to build a browser-based UI without requiring JavaScript or frontend expertise. Key drivers included UI limitations in Swing, high maintenance overhead, and customer demand for web-based access. Vaadin's vendor-backed support, mentoring, and expert chat services were cited as critical to the project's success. Results include improved UX, lower maintenance costs, better performance, and positive customer adoption. Remaining plans include mobile optimization and completing the full module migration.

CSS AG modernizes its ERP system with Vaadin Flow