This article presents the methodology for the selection of information systems\u27 development in enterprises. In order to consider the need to complete up with special insights of other experts and to support this complex decision-making problem, it is based on systems thinking and the methods that have been most preferred for multi-criteria decision-making in the last two decades. To determine the criteria\u27s weights, the methods based on interval (SWING, SMART) and ratio (AHP) scales were found more suitable than SMARTER that is based on an ordinal scale. Direct input, pair-wise comparisons and value functions were used to measure local alternatives\u27 values. The article offers an original explanation how to create piece-wise linear value functions. Experts in a Slovenian company that applied the above mentioned computer-supported methods evaluated them as excellent tools in requisitely holistic decision-making about further information systems\u27 development
