About the Author

Martin Koch is the managing director of CloudDNA GmbH, an SAP partner in Austria. He and his team conduct training for SAP and have developed four of their own training courses on the topics of SAPUI5, SAP Fiori, cloud integration, and cloud security, which are listed in the SAP training catalog. In addition to his work as a trainer, Martin Koch works as an architect, consultant, and developer for international SAP customers of all company sizes. Originally trained as an airline pilot and air traffic controller, he participated in a trainee program at SAP Austria in 2007. There, he initially worked on the topics of integration and SAP NetWeaver AS for Java. In 2010, his focus shifted to mobile applications in the SAP environment. After several projects on the architecture, security, and development of mobile solutions, in 2012, Martin Koch focused on SAP HANA, SAPUI5, SAP Fiori, and SAP Business Technology Platform. Siegfried Zeilinger is a freelancer and managing director of a small management consultancy. His focus is on consulting and security auditing of IT systems as well as authorization and identity management for SAP. His consulting portfolio ranges from SAP architecture to development strategies for ABAP, Java, and the cloud to SAP identity management. In 2016, he received certification as an IT auditor (CISA). Most recently, Siegfried has worked primarily in the pharmaceutical industry and the public sector. Before becoming self-employed in 2011, he worked for SAP Austria as an SAP NetWeaver and portal consultant and carried out major international projects. Today, he regularly conducts training courses for SAP on the topics of authorizations, SAP in the cloud, and SAP NetWeaver. From 2003 to 2019, he supervised theses at the Vienna University of Technology and the University of Applied Sciences Wiener Neustadt and held various courses in the field of SAP.