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XI Tracks 
An XI track (Exchange Infrastructure track) contains all repositories required for developing and delivering XI components.
The following development states exist for the development of XI components:
· Development
· Consolidation
· Production
An XI repository exists for each of these states; each repository runs on a separate J2EE instance.

This figure is a schematic representation of an XI track and its repositories.

For more information about distributing XI content, see Transporting Using the Change Management Service.
