IFIP’s workgroup 5.8 on Enterprise Interoperability was founded in 2008. In this paper we provide a workgroup point of view on the state of the art in Enterprise Modelling, Enterprise Engineering, Enterprise Architectures, Enterprise Integration, Enterprise Interoperability. We present an overview of the state-of-the-art from the WG5.8’s research point of view. A brief history of these topics, with special attention to the work developed by IFIP WG5.8 former and current members is given. With respect to application, references to production systems and the manufacturing enterprise will be made. This article closes with a brief look into very recent developments in the domain of Enterprise Interoperability.