184 WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
components of the runtime environment are implemented through specific application servers
with predefined names. These application servers are created for you when creating certain
profiles. For your topology, you must consider which of these management servers are
needed and where to place them.
Application servers that run your applications can be grouped into static or dynamic clusters
for workload balancing, failover, and scalability purposes.
8.1.7 Directory and security services
Directory and security services supply information about the location, capabilities, and
attributes of resources and users known to this WebSphere Application Server environment.
This inf ...