Dr. Jochen Balla teaches applied mathematics and physics and the fundamentals of computer science at the Bochum University of Applied Sciences, Germany. From 1998 to 2004, he worked for SAP Deutschland GmbH & Co. KG as a course instructor for customer and partner trainings in the areas of SAP PP, APO-PP/DS, and APO CIF.

Dr. Frank Layer is an engineering graduate. From 2001 to 2010, he was an SAP course instructor for customer and partner trainings in the areas of planning and production. Currently, he is responsible for SCM applications in the knowledge transfer area at SAP SE.