Business processes play an important role in Service-Oriented Architectures. Commonly, the business processes are designed in the Business Process Modeling Notation (BPMN), which allows their development even by persons without programming skills. Being abstract and high-level BPMN is not suitable for direct execution, though. The natural choice for implementing business processes is the Business Process Executable Language (BPEL), which is directly executable, but it is also a programming language that requires programming skills in order to be used. This dichotomy is typically solved by transforming BPMN into BPEL.