The concept of a virtual private server can be better explained as a virtual machine that caters to the individual needs of a user just as a separate physical computer that is dedicated to a particular user. The virtual dedicated server provides the same functionality and privacy as that of a normal physical computer. A number of virtual private servers can be installed on a single physical server with each one running its own operating system.
If your bandwidth usage is high and your website seems slow to perform, you may need more resources than a shared website hosting plan provides. Shared hosting means you share everything - so you're restricted in how big your website can grow, and your available resources (disk space, bandwidth, etc) can be affected by the traffic flow and bandwidth usage of other websites running on the same server.
Typical Use Case: Early stage startup workloads, quick prototypes, prelaunch experimentations, dev/test environments, microservices node, code repositories, dedicated application servers for light workloads. Resource intensive workloads like data aggregation, gaming front-ends, video encoding, high performance computing, batch processing. Also see our managed services for Startupreneurs.