. Data exchange in Industrie 4.0 applications Data exchange is an important issue to look at when integrating the production (operational technology, OT) and management (information technology, IT) levels. This is due to the large number of variables and nonstandardized interfaces, as well as the need to support access privileges and specific security requirements. Although OPC UA has now established itself as a standard technology for achieving these goals, the devil is in the details when it comes to implementing successful Industrie 4.0 applications. Interface abstraction, data aggregation and security The dataFEED Secure Integration Server product from Softing Industrial works as an abstract interface between the worlds of OT and…