Some companies have been in business for so long that they are still relying on legacy applications in their operational system. This could be for many reasons, but one of the biggest is that there is simply not a better option—at least, not in their eyes. Enter virtual machines, the solution that makes these kinds of businesses possible without severely compromising on network security.
Of all the hardware you utilize in your business, your servers are likely to generate the highest costs - especially when you consider how much they cost to procure, power, and maintain. A considerable part of running a successful business is to know how to use these kinds of resources optimally, getting the most bang for your buck, as the saying goes.