The Domain mode is something totally new since JBoss AS 4, 5, and 6. It was first introduced in JBoss AS 7.
It's about grouping several WildFly instances into one single group, a server-group using the WildFly nomenclature. In fact, we group the WildFly server into one logical server-group, and all the WildFly instances will share the same configuration. By this we intend that they share the same WildFly profile (
full-ha), same deployments, and so on. What will not be shared is specific instance configuration such as IP bind address, ports, and others.
Suppose you have an application and you want it to deploy on four servers of your infrastructure (or test rather than preproduction or production). ...