Corporate network may refer to the connection between computers inside a company or to a a set of companies with formal or informal relationships.
Meaning in terms of technology
Corporate network is logically separated group of computers, routers and other parts o IT infrastructure which function outside of the traditional bounds of internet. It is often called intranet.
The term intranet describes network that, unlike internet, is meant to be accessed only by a specific group of people .
There is a variety of techniques that can be used to build company-exclusive computer network. Devices can be connected together by using cryptography and VPN's over the open internet. The abbreviation VPN stands for Virtual Private Network - an abstract network gathering only specific machines, having a connection to the global internet. It can be unaccessible from outside the company’s headquarters or without relevant credentials. 
Main purpose of creating corporate networks is to provide security and reliability of company's management information system, data processing system, transmission of data and communication - there may be no need for the employees to use software with restricted data when they are outside their workplace. Furthermore, hosting applications that are relevant only for the company members exclusively inside the enterprise networks may be far less complicated.  Corporate networks use different types of LAN and WAN devices and broadly available protocols and standards of communication to provide such functionalities.
Relationships between companies
Corporate network may be also described as a set of companies with formal or informal relationships (contracts, financial, logistics etc) which act to achieve common market goal. Such networks develop an environment to mutual growth, and can be built over variety of factors. Examples of corporate network forms include:
- Corporate clusters - the relationships are be based on geographical location and lead to expansion of companies operating in similar field.  There are numerous examples of such areas that are renowned worldwide: Silicon Valley, Digital Media City around Seoul or the „motor cities” - Stuttgart and Detroit
- Japanese zaibatsu - grown after World War I, zaibatsu are sets of establishments built around a family clans, consisting of large owner company, multiple smaller firms and surrounding financial institutions. 
- Korean chaebols - similar to zaibatsu, chaebols are family-managed groups of companies operating in various market areas
- Gerlach, M. L. (1992). The Japanese corporate network: A blockmodel analysis. Administrative Science Quarterly, 105-139.
- Moussa, M. (2016) Internet, Intranets and Extranets in Organizations: An Integrative Literature Review. SIU Journal of Management, Vol.6, No.1
- Ferguson P., & Huston, G. (1998) What is a VPN?. OPENSIG'98 Workshop on Open Signalling for ATM, Internet and Mobile Networks, Toronto, October 1998.
- Myles, P. J. (2010) The Impact of Virtual Private Network (VPN) on a Company's Network. Undergraduate Honors Theses, Paper 57.
- Cárdenas, J. (2012). Varieties of corporate networks: Network analysis and fsQCA. International Journal of Comparative Sociology, 53(4), pp 298–322.
- Galaskiewicz, J., & Wasserman, S. (1981). A Dynamic Study of Change in a Regional Corporate Network. American Sociological Review, 46(4), pp 475-484.
- Ford, D. & Hakansson, H (2002). How should companies interact in business networks?. Journal of Business Research 55, pp 133 – 139
- Rosenfeld, S. (1997). Bringing business clusters into the mainstream of economic development. European Planning Studies. European Planning Studies 5(1):3-23.
- Allen G.C. (1981). Economic Policy and the Zaibatsu, 1914–32 A Short Economic History of Modern Japan. Palgrave Macmillan, London, pp 131-140
- Murillo, D. & Sung , Y. (2013). Understanding Korean Capitalism: Chaebols and their Corporate Governance. ESADEgeo position paper (33). Barcelona: ESADE. Center for Global Economy and Geopolitics.
- Moussa 2016, pp 7-25
- Ferguson & Huston 1998, pp 2-4
- Myles 2010, pp 3-6
- Rosenfeld 1997 pp 1-6
- Allen 1983 pp 131-132
- Murillo & Sung 2013, pp 4-6
Author: Izabela Pyszczek