The working environment of managers can be viewed as a technological ecosystem with more and more convergent information and communication technologies (ICT) and social and collaborative systems. Our objective is to study how the process of technology acceptance occurs in this population. By using various models and theories, we propose a systemic and iterative model of the process of technology acceptance in the professional context. It is characterized by consideration of the user experience (UX), formed during the use of ICT and social and collaborative systems, according to the degree to which fundamental needs are satisfied or not satisfied. We use the model to analyse acceptance in the case of a sample of 1768 managers. This study presents empirical values of the use of various ICTs by this population, the importance of eight UX criteria, and their impacts on the general process of technology acceptance.