In a comprehensive approach this book covers the end-to-end Process from request management to
change management error management and migration management to acceptance testing and final
data clean up. It is based upon nearly twenty years of experience in tests acceptance and
certification when introducing medium to large IT systems including complex software for
administrations and industry in many countries. There exist a variety of methodologies with
different characteristics having emanated from various schools and consultancies to support
such activities. However it is obvious that because of the diversity in organisational levels
in companies the rigor of application of such methodologies quite often suffers with regard to
more pragmatic approaches. In view of economic considerations this may be unavoidable. For this
reason no new or consolidated methodology shall be presented but an approach oriented on
practical criteria coming closer to reality and offering methods which can provide assistance
on a case-by-case basis.
