For some it has just proved too expensive to attempt. The following business case illustrates how virtual private networking dramatically lowers the costs associated with branch office communications. The cost comparison between the private line and Internet options demonstrates the strength of the case for conducting branch office communications over the Internet. The monthly operational costs for the private line scenario are 43,987 whereas the monthly operational costs for the Internet scenario are only 21,668. Flexibility - the Internet brings a degree of flexibility to corporate communications that has never before been available.
Corporations can add branch offices to their network simply by setting up Internet access.
The low access price enables corporations to connect branch offices to their network that previously had no access at all and the Internet provides instant access to global trading partners and customers as well. You must manage lines between each of the offices. For a 10-site network, you must manage 45 PVCs. For a 150 site network you need 11,175 PVCs. With the Internet, however, you need only provide each office with Internet access-you do not need to manage individual lines.