VPS hosting - is a "virtual private server" (or a "virtual dedicated server"), a form of web hosting based on the concept of partitions on mainframes and advanced resource scheduling to divide one computer into many virtually isolated, private servers. You might say that it is a server that runs inside another server. Each VPS or virtual private server acts like a uniquely dedicated server in and of itself, but shares the same hardware as several other virtual servers
Virtual private servers provide you with the flexibility and control you expect from dedicated servers at price point of shared hosting.