Presently, no methods exist that support the creation process of an industry taxonomy within a specific domain. Without such a method, taxonomies remain erroneous, making the development of, for instance, a directory of companies for research, extremely hard. This paper presents a method for creating complete and encompassing domain specific taxonomies. With such a method, researchers can create complete, consistent, taxonomies that in turn provide a strong basis for data model development. The method is applied in practice, and the industry taxonomy is evaluated by practitioners. Categories and Subject Descriptors D.3.3 [Programming Languages]: Language Contructs and – abstract data types, polymorphism, control structures. Keywords Industry Taxonomy Engineering, Software Ecosystem.