JBoss EAP provides two modes of operating the JBoss EAP instances. It can either be booted into a standalone server, or managed domain. Each mode is designed to suit the different needs of diverse business scenarios. It enables you to choose from a single server installation or coordinated multi-server management to leverage on your business needs and automate processes for ease of management.
The choice between a managed domain and standalone servers is all about how your servers are managed and not what capabilities they provide to service the end user requests. This distinction is particularly important when it comes to high availability (HA) clusters. It is important to understand that HA functionality is orthogonal to running standalone servers or a managed domain. That is, a group of standalone servers can be configured to form an HA cluster.