Apache TomEE, affectionately known as “Tommy”, is a certified application server for Jakarta EE 9.1, built upon the foundation of Apache Tomcat by utilizing a standard Apache Tomcat zip file. The process begins with the base Apache Tomcat, to which we integrate our specific libraries and then package everything together. The end product is essentially Tomcat enhanced with additional EE features, resulting in TomEE. This server is stable and production-ready, with Apache TomEE 8.0 implementing Java EE 8/Jakarta EE 8 while maintaining support for the javax namespace, and it operates on Java 8 or later versions. Furthermore, it aligns closely with the Jakarta EE 9.1 web profile and embraces the new jakarta namespace, requiring Java 11 or more advanced versions. Apache TomEE is available in four distinct variations: web profile, MicroProfile, Plus, and Plume, each tailored for specific requirements. The web profile of Apache TomEE includes essential components such as servlets, JSP, JSF, JTA, JPA, CDI, bean validation, and EJB Lite. Meanwhile, Apache TomEE MicroProfile introduces functionalities that cater to MicroProfile needs, while TomEE Plus and Plume extend capabilities to include JMS, JAX-WS, and several other features. With its robust architecture and diverse profiles, Apache TomEE is designed to accommodate a wide array of enterprise applications.