A system and associated method for automatically generating a service specification of a Service Oriented Architecture (SOA) solution. A process model framework and a data model framework are received as inputs. Processes in the process model framework perform services of various complexity levels. Processes are decomposed into a respective set of atomic service processes in the lowest complexity level and data objects are extracted from the decomposed atomic service processes. The data objects are associated with data elements of the data model framework. The data model framework is extended and flexibility patterns are added for reusability of the service specification. The service specification of the SOA solution is generated as process interfaces represented with the data objects according to inputs from a user customizing aspects of the service specification, for either a desired service of the SOA solution or a desired process in the process model framework.