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Title: Extranet  
Author: World Heritage Encyclopedia
Language: English
Subject: Intraweb, Construction collaboration technology, Collaborative software, Computer network, Catalog server
Collection: Computer Network Security, Network Architecture
Publisher: World Heritage Encyclopedia


An extranet is a VPN[1]


  • Enterprise applications 1
  • Advantages 2
  • Disadvantages 3
  • See also 4
  • References 5
  • Further reading 6

Enterprise applications

During the late 1990s and early 2000s, several industries started to use the term 'extranet' to describe centralized repositories of shared data (and supporting applications) made accessible via the web only to authorized members of particular work groups - for example, geographically dispersed, multi-company project teams. Some applications are offered on a software as a service (SaaS) basis.

For example, in the construction industry, project teams may access a project extranet to share drawings, photographs and documents, and use online applications to mark-up and make comments and to manage and report on project-related communications. In 2003 in the United Kingdom, several of the leading vendors formed the Network for Construction Collaboration Technology Providers (NCCTP) to promote the technologies and to establish data exchange standards between the different data systems. The same type of construction-focused technologies have also been developed in the United States, Australia and mainland Europe.[2]


  • Exchange large volumes of data using Electronic Data Interchange (EDI)
  • Share product catalogs exclusively with trade partners
  • Collaborate with other companies on joint development efforts
  • Jointly develop and use training programs with other companies
  • Provide or access services provided by one company to a group of other companies, such as an online banking application managed by one company on behalf of affiliated banks


  • Extranets can be expensive to implement and maintain within an organization (e.g., hardware, software, employee training costs), if hosted internally rather than by an application service provider.
  • Security of extranets can be a concern when hosting valuable or proprietary information.

See also


  1. ^ See RFC 4364
  2. ^ Wilkinson, Paul (2005). Construction Collaboration Technologies: The Extranet Evolution. Taylor & Francis.  

Further reading

  • Callaghan, J. (2002), Inside Intranets & Extranets: Knowledge Management and the Struggle for Power, Palgrave Macmillan, ISBN 0-333-98743-8
  • Stambro, Robert and Svartbo, Erik (2002), Extranet Use in Supply Chain Management, University of Technology
  • Wilkinson, Paul (2005). Collaboration Technologies: The Extranet Evolution. Taylor & Francis.  
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