Extranet refers to an Intranet that is partially accessible to authorized outsiders. Whereas an Intranet is accessible only to people who are members of the same organization, an Extranet provides various levels of accessibility to outsiders. A third party can access an Extranet only if they have authorization from the organization, and your identity determines which parts of the Extranet you can view. Extranets are becoming a very popular means for business partners to exchange information. Integration is defined as the grouping of information and services together and assembling the components into complete service offerings.
Internet is a global network connecting millions of computers using a standardized network protocol.
For the purposes of this document, the Internet is one of the networks, which will deliver information and services of the Government of Canada. Intranet is an organizational network, usually belonging to a corporation, connecting computers using a standardized network protocol. The network is accessible only by the organization's members, employees, or others with authorization. An Intranet's Web sites look and act just like Web sites on the Internet, but specific access controls prevent unauthorized access. On-line is the descriptor that represents the situation when clients are connected to a Transport Canada service electronically.