Organizations that are part of a business network have been shown to achieve a stronger and more competitive structure, can access specialized services, technology, purchasing inputs, financing and improving industrial processes, in addition to improving its competitive progression in terms of product processes and innovation. But this network would not be possible without social capital, because it is the real engine of businesses. This essay will explain the network theory of internalization, social capital on internalization and delve deeper into both terminologies. Michael Porter established a theoretical framework for business application in industries that analyzed the processes and activities that create value in the organization and dynamics. with your competitors and your market. However, Porter's value chain formulation was limited to a vertical view of organizations, making implementation rigid in non-industrial or horizontal integration sectors flexible. Porter researched human value as a production resource, basing his model on cost optimization, differentiation and profitability. The concept of value chain has evolved in recent years to become the concept of value networks in which the links of the value chain are invested. flow management and is part of the customer's preferences followed by the management of all business processes, distribution, product design, etc. To offer an offer appreciated by the market. In this new approach, corporate networks are woven where the nodes are actors, companies, individuals or entities from which interdependence relationships are established by the organizations to adopt more horizontal, flexible, configurable structures. and effective. In the past, the ..... . middle of document ......f Weak ties: a network theory revisited. Sociological Theory, Vol. 1 (1983), pp. 201-233 • Nan Lin (1999). Building a network theory of social capital. 19th International Sunbelt Social Network Conference, Charleston, South Carolina, February 18-21, 1999. • Mark Casson and Howard Cox (1993). International business networks: theory and history. History of Business and Economics, Volume Twenty-Two, no. 1, fall 1993. • Jeremiah Gonzalez (2010). Understanding the role of social capital and school structure on Latino academic success. LUX: A Journal of Transdisciplinary Writing and Research from Claremont Graduate University, Vol. 2 [2013], Ess. 1, art. 16. • Gabriel Yoguel (2000). Creation of skills in local environments and productive networks. Revista de la Cepal 71 (2000). • Dr Tanja Kontinen (2013). Slides from the topic “Business Strategies for International Growth”.