Virtual Private Server – VPS is a virtual server, one of several which are created on a single physical server.
Affordability and Value
While a VPS will usually cost more than shared hosting, it will not cost anywhere near as much as dedicated hosting. At Liquid Web, a high-performance VPS does not cost much more than most shared hosting plans. When you look at the advantages of VPS over shared hosting, you can quickly see why a VPS is a much better value, especially as you consider managed VPS hosting.

Access and Control
Sites owners using shared hosting have limited control over what is installed on their environment.

Businesses that lease VPS hosting will benefit from running only the services needed. For example, if you know you are not going to use email functionality on your server, you can shut down or even uninstall services like Bind or webmail applications. Liquid Web provides root access to your VPS so that you can make any changes you need.

Elasticity
If your site suddenly experiences a surge in traffic, as is usual during Black Friday promotions, you need to be able to scale your server resources to meet increasing traffic demands. This kind of fluctuation will often bring a shared server to a screeching halt, especially if other sites on the server experience the same thing. Not only is a VPS typically capable of absorbing these spikes, if your site does suddenly need more resources, VPS hosts can upgrade your resources quickly and easily.
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