The objective of this paper is to evaluate the semantic building block-based approach as a means for intra- and interorganizational business process modeling. It is described whether and why the semantic building block-based approach reduces the variations in distributed modeling projects in comparison to traditional modeling approaches. Our argumentation is grounded on the assumption that the specification of a service-oriented architecture (SOA) requires a detailed understanding of the intra- and interorganizational business processes. In order to enable the collaboration of services the underlying process structure must be explicated. In a laboratory experiment the variations of distributed process modeling in the traditional and the building block-based approach have been compared. It could be shown that the semantic building block-based approach leads to considerably fewer variations and, thus, to a more consistent view on the intra- and interorganizational process landscape.