Several models for assessing success, failure and
the way forward for ICT systems in general
DeLone and McLean (2002) and developing
countries Heeks (2002) have been suggested.
These and other models are considered relevant
to this paper. The model proposed by DeLone and
McLean (1992, p.87) was later overlaid on a
simpler scheme of functionality, usability and
utility by Beynon-Davies (2002). This overlaid
model introduces the idea of functionality and
usability, which are considered relevant to ICT
implementation. Beynon-Davies argues that, the
worth of an IS will be determined in the three
contexts of functionality, usability and utility.
DeLone and McLean (2002, p.2) acknowledged
the difficulty in defining information system
success and noted that different researchers
address different aspects of success, making
comparisons difficult and the prospect of building
a cumulative tradition for I/S research similarly
elusive.