The theme concerning the essence of technology stands in close kinship with what Heidegger calls "Ereignis" as the texts "Die Kehre" and "Der Satz der Identität" make amply clear. At this point, we will examine this relationship which demands that we first of all, however summarily, explore the notion of Ereignis itself. The first stage of this investigation will consist in considering some relatively early passages, while in the second we will tend to three central texts in which the relationship technology-Ereignis is brought to expression.