What are the differences in VPN and Internet?

I am trying to figure out why a company would choose VPN if they already have internet service, what does the VPN do for a company. |||The internet is generally a component of a VPN. A VPN is a virtual private network, of course.





Think of it like this...





Say you own a smaller company. You have an office with several floors, and about 30 computers. You want them on a network, but do not want to invest the money in having lines run all throughout your building, and bringing in other expensive equipment,





A VPN is a solution to that problem whereby you use the internet or some other public infrastructure to create your network.





There is a bit more to it than just setting up connections across the internet, security protocols and what not are in place to ensure that the "private" aspect of a VPN is kept.|||VPN is a Virtual Private Network. It allows you to connect to your company's network via a secure channel using your exisitng internet connection. Essentially, it protects any information on the connection from interception. An example would be the use of your company's Microsoft Exchange Server though MS Outlook to check your work email from home.|||A VPN will allow you to permit users to come into your network from the outside, like from home. Then they can work.





If your network does not have internet access in the first place, then you need not worry about a VPN.





The internet is the highways and streets that you drive. So you drive to your office. The VPN is the security at the gate that decides if you can go inside and park.