The Internet is essentially one giant connection through copper, fiber optics, and telephone lines, separated by networking devices. These networking devices may be routers, modems, or switches, among others. The difference between the Internet and the tin can example is that there is not one main wire that everyone connects to – instead, using the metaphor, the first employee may have a direct connection to the fourth, and the second employee may have a direct connection to the third. Imagine two companies connecting together, and you can see where things get tricky. The connections become entangled and form a web, thus bringing light to the term “World Wide Web”.
Now, in the real world, companies are generally connected to each other through a switch, then a router, a firewall, a modem, and then to the company’s Internet provider. The company’s internet provider then connects to a server at a datacenter or another computer through a web of Internet providers hooking-in to each other’s connection.
The cloud is simply a metaphor for a bunch of datacenters and Internet providers connected together. That’s it. A datacenter is like a warehouse, but instead of inventory, it contains hundreds or even thousands of servers (a high powered computer). When you send an email, your computer talks to your mail server and asks it to deliver a message. Your mail server figures out the best path to take to the recipient’s mail server, makes the connection, and delivers the message. If both of your mail servers are in datacenters, then you just experienced the cloud in action. If you go to datacentermap.com, you can actually see most of the datacenters in the world.
Say you want your email, documents, and other company data available to your all of your employees. Traditionally you go through the process of purchasing a server, paying a company to prepare and install the server, move the data, and make sure everything is working, right? Moving to the cloud means that instead of purchasing your own server, you rent these services from another company. So, how is this beneficial?
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