This article describes and analyzes actors' experiences of distance learning systems in a wide variety of cultural and organizational contexts. In line with the project of this special series of issues, results of research, much of which is longitudinal, allow us to suggest answers to the following questions: Who are the actors of distance learning? How has their experience of learning systems evolved over the last thirty years? What roles have information and communication technologies (ICTs) played in this evolution? How do actors assess the effects of these learning systems on themselves, on the system itself, or on the organization? What are the future perspectives?