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Intranets and extranets

The majority of Internet services are available to any business or consumer that has access 

to the Internet. However, many digital business applications that access sensitive company 

information require access to be limited to qualified individuals or partners. If information is 

restricted to employees inside an organisation, this is an 

intranet

, as is shown in Figure 1.5.

Today, the term intranet is still used, but software services similar to Twitter and Facebook 

are being implemented within companies to achieve similar goals of information sharing and 

collaboration. Mini case study 1.2 shows an example of one such