Insight to the large scale Information Systems implementation in Sri Lanka

Information is so crucial for today\´s business organizations and therefore it has become an important asset. Information Systems (IS) have emerged to accomplish the task of managing valuable information. Large businesses have very complex information requirements thus requiring complex IS namely "large scale IS". In the last few decades, the failure rate of enterprise systems as studied by the researchers were almost 50% ~ 90% and most of these IS failures resulted from poor implementation practices adopted by the implementers. This makes it sound studying and identifying the factors that affect the successful implementation of large scale IS. This research focuses on developing and testing a model for successful large scale IS implementation by identifying critical success factors. The analysis of gathered data reveals that the factors affecting the implementation of large scale IS can be distinctly categorised in to six perspectives explicitly Individual, Task, Technology, Structure, Process & Environmental factors. Further analysis on data shows that these factors can again be overlooked in two dimensions, factors affecting the pre- implementation stage and implementation stage. These six distinct categories were put into four phases according to their priority of consideration. The set of critical success factors, enhanced implementation framework, threshold values of the identified critical success factors were the conclusions derived from this research.