
The wish for interoperability and the integration of external systems is always in focus, whether the customer is globally active or only in Europe. To achieve this, systems are increasingly open instead of being shut off against each other. Open Standards structure these openings and guarantee a problem-free flow of information. Here, it is defined what corresponds to the requirements for openness and what not. If these standards for openness are observed, various systems can interact with each other independently of their respective technological background. The software solutions we develop are Free Software and correspond to the definition of Open Standards for the electronic traffic of public authorities and the public sector of the EU, as defined in the European Interoperability Framework.