EIM concepts
A conceptual understanding of how Enterprise Identity Mapping (EIM) works is necessary to fully understand how you can use EIM in your enterprise. Although the configuration and implementation of EIM APIs can differ among server platforms, EIM concepts are common across IBM eServer™ servers.
The following figure provides an EIM implementation example in
an enterprise. Three servers act as EIM clients and contain EIM-enabled
applications that request EIM data using lookup operations. The domain
controller stores information about the EIM domain, which includes
an EIM identifier, associations between these EIM identifiers and
user identities, and EIM registry definitions.
Figure 1. Overview of an EIM implementation. This shows a
typical EIM implementation.

Review the following information to learn more about these EIM
concepts: