“…Downstream, the ability to achieve contracted results is subject to the contribution of resources and activities by the customer and the provider, making Page 17 the boundaries between them more fluid . The purpose of a PSS may be shared by a diverse network of stakeholders undertaking a complex offset of interdependent activities within the virtual boundaries defined by the concept of enterprise (Purchase et al, 2011). Identifying the service-delivering activities and their linkages is necessary in order to adequately address service uncertainty (Erkoyuncu et al, 2011b).…”