We investigated the differences in ES implementation in a transition economy when compared to praxis in developed economies. For that purpose, we conducted interviews with practitioners with several years of experience that played various roles in those types of projects in a transition economy, and then contrasted the findings with those of the mainstream literature, mainly based on data from developed economies. We identify similarities and variation in lifecycle phases, activities, and the actors involved in the process. This helps to better understand this phenomenon in a moment when several transition economies are making strides to bring their IT systems to speed in the European Union and other parts of the world.