• Internet, Intranet and Extranet

    Advancements in the field of communication were the forerunner for all the progress’ human race has achieved in the twentieth century. The greatest of all can be said as the development of the internet. The internet allows communication between millions of connected devices worldwide and it connects more than half the world’s population as of 2016. More than anything, communication has become the backbone for business services.

    The internet is a large scale client server system which uses a TCP/IP, a set of protocols which provides end-to-end connectivity specifying how data should be packetized, addressed, transmitted, routed and received at the destination. The World Wide Web, email, chat and file transfer services are all made possible by the internet.

    The development of internet has paved way for much technological advancement in the field of networking. Intranet and Extranet are two such derivatives which use internet protocols as the base of its functioning.

    What is an Intranet?

    An intranet is a local or restricted communications network, especially a private network created using World Wide Web software. The Intranet is guided by Internet Protocols like HTTP and TCP/IP. In simple terms, it can be said as a private network accessible only to an organization’s staff.

    The intranet changed the way how corporations operate. In an intranet, network applications can be created that can run on many types of computers. It is a secure network, as it is protected by a firewall. The firewall acts as the gate keeper between a device and the network, foreseeing security of incoming and outgoing network traffic.

    Uses of Intranet

    Intranet allows a corporation to create an internal network of computers, which uses secure network applications which find its applications in collaboration, project management and customer relation management.

    The main advantages of intranet are the cost savings it generates for the organization. As information can be accessed/shared electronically a huge sum can be saved on printing and distribution of the same. It also saves a lot of time.

    Different companies have intranet portals, which can be accessed by the employees. Employee management portals like these allow HRs to monitor leaves, salaries, and grading of the work force.

    What is an Extranet?

    An extranet is an extended form of intranet that allows controlled access to partners, vendors and suppliers or an authorized set of customers to the organisation’s network over the internet. In simple terms, an extranet can be viewed as part of a company’s intranet that is extended to users outside the company.

    An extranet facilitates closer working relationships with the partners. Extranet can be a private network or a Virtual Private Network (VPN), protected by a firewall and follows the internet communication protocols. Authorised partners and customers can log in to an extranet with valid credentials.

    Uses of Extranet

    Extranet finds its application in multi industries like, manufacturing, banking, customer services, project management, supply chain etc. Extranets are very useful for a scattered or a travelling work force. Extranet also inherits all the benefits of an intranet.


    Now, you have a clearer idea about the three different networks. Each has its own importance and application. Each has their own cost implications, security regulations and accessibility criteria. Today’s world is small and connected, and it is those small switches and routers that balance the business world on its axis.

  • Watch video of how it works here