The adoption of ISO/IEC 20000 is a considerable investment by any organization in time, resources and ultimately costs.
To assist Senior Management in making an informed decision on whether to commission the ISO/IEC 20000 route a work book is available entitled:
IT Service Management - A self assessment work book: 2005
(BIP 0015) (ISBN: 0580479234)
The work book assists with assessing the effectiveness of an organization IT Service Management best practice processes, it provides the ability to assess and compare the processes with those described under ISO/IEC 20000.