Résumé en anglais

Since the last decades our world, completely transformed by the digital invasion, is becoming a digital world. Notably, enterprises, social lives, and even health care, subjected to the immediacy of this invasion, are confronted with drastic change challenges. Enterprises become digital enterprises. Whereas digital is an adjective related to digit, there is no unanimous definition of what this concept actually means in the scientific literature. Digital devices such as computers, tablets, and smartphones, give individuals the means to interact regardless where they are, and to share more than just information. The Enterprise's Information and Knowledge System (EIKS) considers individuals not only as users of the digital information system, but also as components, i.e. processors of information and holders of knowledge. Within enterprises we observe the emergence of digital departments differing from the information system department. Such digital departments are not under the supervision of a Chief Information Officer. In this paper, relying on three postulates and on the characteristics of the digital enterprise, we propose to present what the EIKS is, its role within the digital enterprise and what it is becoming, through the use of the General System Theory.