From DeveloperWorks, System administration for WebSphere Application Server V7: Part 1 — An overview of administrative enhancements

This series of articles describes several important new administration features
available in IBM WebSphere Application Server V7. Part 1 introduces these features and subsequent articles
will explore specific features in detail. (IBM WebSphere Developer Technical Journal)

A discussion of the new features from an administration perspective. You’ll need to know this as all the dependent websphere products re-based themselves on this new level of WAS over time.