The economic liberalization, political democratization and governmental decentralization have significantly brought about changes in the public sector management. The dominant roles of the state as a regulator as well as provider of public goods and services have massively eroded, and subsequently replaced by society (non-state actors). Consequently, the vertical relationships among actors either within the state institution or, generally, in social relations are getting out of fashion. At present, the model of government has been replaced by the newly model, that is, governance. In this model, the inter-organizational relationships grow to be much more significant characteristic, rather than inter-organizational patterns.Many practitioners in government, who had habitually employed the hierarchical patterns, faced many difficulties to understand and to place their position in these chaotic and anarchical situations. Meanwhile, the organization theories, which have widely focused in the inter-organizational model, have no significant contributions to cope with these changes. This paper endeavours to search for a new model of relation management, which possibly captures the more horizontal relationships in inter-organizational arenas