A Virtual Private Server (VPS) combines shared hosting with the power of dedicated servers. Essentially a Virtual Private Server will give you all the benefits of a dedicated server such as root access, unlimited domains, unlimited subdomains, unlimited mysql databases, cPanel and WHM access and more. 
 
It's a more affordable option when compared to dedicated servers and therefore makes it easy to start with a VPS and upgrade as your site grows. With full access (root) along with the powerful WHM Interface, you will be able to install advanced software and customize the entire system to your liking.