A WebLogic Server domain is a logically related group of WebLogic Server instances, and the resources running on and connected to them, that can be managed as a single administrative unit.This chapter includes the following topics:Understanding DomainsThe core of a WebLogic domain consists of the Administration Server, which is the central point from which you configure and manage all resources in the domain.Usually, you configure a domain to include additional WebLogic Server instances called Managed Servers. You deploy web applications, EJBs, web services, and other resources onto the Managed Servers and use the Administration Server for configuration and management purposes only.