The growing demand for packaged portal solutions is leading to an increasing attention in the management of critical success factors (CSFs) across the stages of the engineering process. We identified and analyzed the most important factors, critical for the success of the implementation of enterprise portals. We also relate the CSFs to the different stages of the implementation process and provide advice on how to manage these factors. Based on these findings, instruments that can improve the engineer-ing and management of portals can be proposed and developed.