What is an internet. Explain the differences between internet, intranet and extranet?

Internet is a global network of interconnected computers, enabling users to share information along multiple channels. Typically, a computer that connects to the Internet can access information from a vast array of available servers and other computers by moving information from them to the computer’s local memory. The same connection allows that computer to send information to servers on the network; that information is in turn accessed and potentially modified by a variety of other interconnected computers. A majority of widely accessible information on the Internet consists of inter-linked hypertext documents and other resources of the World Wide Web (WWW).

Computer users typically manage sent and received information with web browsers; other software for users’ interface with computer networks includes specialized programs for electronic mail, online chat, file transfer and file sharing. The movement of information in the Internet is achieved via a system of interconnected computer networks that share data by packet switching using the standardized Internet Protocol Suite (TCP/IP). It is a “network of networks” that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber optic cables, wireless connections, and other technologies

Difference between internet, intranet and extranet as follow:
Extranet :

An extranet is a private network that uses the Internet protocols and the public telecommunication system to securely share part of a business’s information or operations with suppliers, vendors, partners, customers, or other businesses. An extranet can be viewed as part of a company’s intranet that is extended to users outside the company. An extranet requires security and privacy.

A new buzzword that refers to an intranet that is partially accessible to authorized outsiders. Whereas an intranet resides behind a firewall and is accessible only to people who are members of the same company or organization, an extranet provides various levels of accessibility to outsiders. You can access an extranet only if you have a valid username and password, and your

Identity determines which parts of the extranet you can view.

An extranet is somewhat very similar to an intranet. Extranets are designed specifically to give external, limited access to certain files of your computer systems to:

  • Certain large or privileged customers.
  • Selected industry partners.
  • Suppliers and subcontractors… etc.

Therefore, a carefully designed extranet can bring additional business to your company. Intranets and extranets all have three things in common:

  • They both use secured Internet access to the outside world.
  • Both can drastically save your company or organization a lot of money.
  • Both need a user ID & password to control access to the whole system.

The professional development team at My Web Services has the expertise and the right tools to design the right intranet or extranet that will meet your exact needs, both for today and the future.


An internal use, private network inside an organization that uses the same kind of software which would also be found on the Internet. Inter-connected network within one organization that uses Web technologies for the sharing of information internally, not worldwide. Such information might include organization policies and procedures, announcements, or information about new products. An intranet is a restricted-access network that works like the Web, but isn’t on it. Usually owned and managed by a company, an intranet enables a company to share its resources with its employees without confidential information being made available to everyone with Internet access.

A network based on TCP/IP protocols (an internet) belonging to an organization, usually a corporation, accessible only by the organization’s members, employees, or others with authorization. An intranet’s Web sites look and act just like any other Web sites, but the firewall surrounding an intranet fends off unauthorized access. Like the Internet itself, intranets are used to share information.

An intranet is an information portal designed specifically for the internal communications of small, medium or large businesses, enterprises, governments, industries or financial institutions of any size or complexity. Intranets can be custom-designed to fit the exact needs of businesses no matter where they are situated. Users of intranets consist mainly of:

  • Members of the executive team.
  • Accounting and order billing.
  • Managers and directors.
  • Sales people and support staff.
  • Customer service, help desk, etc…


An electronic network of computers that includes nearly every university, government, and research facility in the world. Also included are many commercial sites. It started with four interconnected computers in 1969 and was known as Arpanet. A network of computer networks which operates world-wide using a common set of communications protocols. The vast collection of inter-connected networks across the world that all use the TCP/IP protocols. A global network connecting millions of computers. A worldwide network of computer networks. It is an interconnection of large and small networks around the globe. The Internet began in 1962 as a resilient computer network for the US military and over time has grown into a global communication tool of more than 12,000 computer networks that share a common addressing scheme.

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