Implementation of a decision support process for evaluating the correlation between IT investment and of information systems success

The main objective of this paper is to study the correlation between investment in information technologies and especially systems system success based on data collection a multi-criteria decision-making approach using technique for order preference by similarity ideal solution (TOPSIS) analytical hierarchy process (AHP) methods. criteria hierarchical model evaluating are chosen from Delone McLean (IS) model. proposed has been implemented 3 sectors recognized their variation use systems: financial sector, service companies construction industry sector. Therefore, results implementation show that massive does not always guarantee good success, result system.