Extreme System Administration
Subject:   Stepwise Deployment + advances in virtualization
Date:   2005-04-02 06:30:52
From:   nzheretic
Firstly : Agile Methods in System Administration == Stepwise Deployment.
Incremental adding of features, upgrading, transitions etc. One step at a time, evaluating the value of each step.

It is not as easy as it sounds, although recent advances in virtualization at the OS level and service level is going to make it a lot more interesting if not easier.