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A intranet It is a non-public network of companies, government or educational organizations, which is based on the technology of the Internet service provider. Users can enter the intranet content from a browser if they have previously been authenticated with their access data.

How does it work

Servers, clients, and devices are needed for an intranet through which participants can communicate with each other on the network. The transmission protocol is TCP or HTTP. There is no spatial limit for an intranet, since its users can enter it through a VPN tunnel if they are spatially separated from each other. An intranet is usually secured with a login that must be executed by each participant before entering with a password and an ID.

Many times the WWW can be accessed through an intranet. However, access can be verified and limited by system administrators. At the same time, incoming data streams are blocked by firewalls.

In the Web 2.0 sense, intranets can also contain social media items. Large intranets can include their own forums, blogs, or community sites.

Application areas

Companies and government agencies use intranets for various purposes. This can be, for example, the following:

  • Internal communication
  • Personalized distribution of information
  • Transmission of specific information
  • Access to internal databases
  • Search in own files


Establishing an intranet has many advantages, which are briefly described below:

  • Simple application via browser technology
  • Rapid distribution of information within government agencies, companies, or workgroups
  • Feasible increase in workflow
  • Strengthening of corporate identity
  • Long-distance viable cooperation
  • Feasible control of workers' browsing behavior
  • Simplified data management
  • Simplified application of measures in the field of data protection
  • Easier internal evaluations

Relevance for SEO

Search capabilities within intranets are repeatedly discussed. Because users expect equally accurate results as they would get from a Google search, but are often disappointed. For this reason, there are frequent discussions regarding whether SEO measures can also help improve search within intranets. Opinions on this question are divided. While advocates argue that content such as text or images pose almost identical optimization opportunities Like search engine optimization for the Internet, critics, apart from this, argue that the wide range of infrastructure characteristics of intranets would not allow any general conclusion about optimization.