Investing in a dedicated server is something that many companies due in order to ensure that their website is as secure as possible at all times. When a site is hosted on a dedicated server, all of the server's resources are used for just that single site which means that during high periods of traffic, particularly when they are unexpected, the site is more likely to stay operational rather than crash as can happen when using other types of servers. Websites being hosted on a shared server will work fine when the volume of traffic is low but when it increases, even for a short period of time, these sites and the others shared on the server, will crash.
When this happens, visitors to the site, usually potential customers, see that it isn't functional and write off the product or services. It's nearly impossible to get those visitors back after a poor first impression like that. This is what motivates companies to opt for a dedicated server as opposed to a shared server. However, anyone that has looked into a dedicated server knows that they can be expensive and some companies don't have the budget for it.
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