Internet is a flexible computer network organization managed by several private companies, universities and governmental institutions that are promoting the development and diffusion of the Internet. All of them operate like a democratic alliance. The private companies are divided into ISP and Commercial Internet Service organizations. Many government bodies sponsor backbone or superhighway (very high-speed lines that bring the Internet traffic across the nations). For instance, in the United States, exists a very high speedway structure dedicated to universities and research institutes called VBNS (Very High Speed Backbone Service) that realizes the first phase of the so-called electronic superhighway and consists of an optical fiber network capable of conveying the present Internet traffic and the future multimedia traffic. It is common in the US for a big company or an organization like NASA to provide the backbone that links the various world/country sites.

The country network provides the access within a specific geographical area. The country networks are commonly formed from various local networks that join together to make a better and more efficient service and the Network Information Center (NIC) helps the organizations to use the Internet. Internik is an organization sponsored by the National Science Foundation that co-ordinates the various NICs. The Internet registry registers all the physical addresses as of every site and keeps track of their own connection with the various logic names assigned to them. For instance the physical address 194.203.20.1 corresponds to www.linkserve.com

Internet Society is a non-governmental, non-profit organization that prepares and gives advice on technological recommendation and promotes the diffusion of the Internet throughout the world. The Internet Service Provider sells Internet and e-mail subscriptions and they manage a determined portion of the net and they also provide long distance connection (backbone) (see detailed drawing of the system).

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