We are just ending the first phase of a fundamental transformation of the IT organization. At the beginning of this transformation, virtually all IT organizations were comprised of myriad stove piped functions; e.g., devices, networks, servers, storage, databases, security, operating systems. A major component of the transformation is that leading edge IT organizations are now creating an environment that is characterized by the realization that IT is comprised of just two functions, application development and application delivery, and that these functions must work in an integrated fashion in order for the IT organization to ensure acceptable application performance. This view of IT affects everything – including the organizational structure, the management metrics, the requisite processes, technologies and tools. One of the primary goals of this handbook is to help IT organizations plan for that transformation.