Like other Java enterprise tools, Tomcat has migrated from the original Java EE specification to Jakarta EE. Tomcat 9 and earlier were based on Java EE; Tomcat 10 and later are based on Jakarta EE.
Jakarta Enterprise Edition 9.1 allows developers to use Java SE 11 features in Jakarta EE applications and migrate Jakarta EE apps to Java SE 11 without changes. The Eclipse Foundation’s Jakarta EE ...