System development strategies
The four Thai cases exhibit major differences in the approaches adopted for the
development of EIS. Table 2 compares these differences in the categories of requirements
elicitation, analysis and design techniques, and development tools. Three distinct
development approaches were used: evolutionary, traditional or linear systems
development life cycle (SDLC) and outsourcing. The use of systems analysis techniques
and the selection of hardware and software was strongly influenced by the development
approach. The organisation which used the traditional SDLC approach applied large scale
information systems methods and tools while the one which employed the evolutionary
approach used methods and tools common to Western EIS cases. Two cases used
outsourcing to some degree; the methods and tools which they used varied according to
which vendors were used and which parts of the development process were outsourced.