It is customizable: as in a dedicated server, on a VPS server it is possible to install your own operating system. With what you can fully customize the applications and functions installed on the server such as MySQL, PHP and Apache. Allowing this, that they can adapt to the needs of the website.
It is completely private: in this type of servers, since the IP is not shared as well as the operating system, there is no possibility that the rest of the websites with which the server is shared can see or access in any way to your files
You have complete control: after an installation it is usually necessary to restart the server. In the case of VPS can be restarted at any time without affecting the other websites installed on the computer.
It has dedicated resources: by having your own dedicated RAM, no other website with which you share the server can use your share of available memory space. With what there will be no instability in the capacity of the bandwidth.
It is easily scalable: due to the characteristics of this type of servers, it is easy and quick to increase your capacity at the time it is necessary for your website. Likewise, if you do not need all the contracted capacity, it could be reduced as well.